Oversampling function was added. Using oversampling reduces the separation between "True Peak" and "Peak". However, the processing time will be delayed. Setting Oversampling to 1x will result in the same behavior as before.
If you are concerned about True Peak, please try it.
"Limiter error spectrogram" added
"Limiter error spectrogram" is visualized in spectrogram form at which timing and which band affects the limiter error. I think it will be easier to reduce the limiter error when using this.
Since the relative value is displayed, you do not have to worry if "Limiter error" is small in the first place. In areas where there is no original sound such as super high frequency range and silent part, the color tends to become thicker overall, but there is no problem if it does not matter if you listen.
What is important is the dense part of the color that exists in the dark part. This image contains many vertical lines below 15 kHz. This line is a distortion that occurred without being able to completely compress the peak of strong attack sound.
Please refer to the following article for how to reduce the limiter error.
Dissonance index is an indicator of dissonance degree of sound. The Dissonance index tends to become small as there are many sounds whose spectrum is densely concentrated in the frequency direction, such as percussion instruments and noise, and become smaller as there are many pitches with pitches such as piano and strings.
Speed up audio analysis
In AI Mastering, after uploading audio, mastering starts when audio analysis is completed. As we speed up the analysis of the audio, mastering should start faster.
In the recent update of AI Mastering , we started limiting based on true peaks (intersample peaks), but depending on the application, you may want to limit based on normal peaks.
I added the "Ceiling" option for that to the "Custom Mastering" of AI Mastering.
"Ceiling" option
Specify the maximum output level. It is the same as Ceiling of the general limiter VST plug-in. 0 dBFS is the maximum. If encoding is required in later processing, it is possible to prevent clipping due to encoding by making it a little smaller value.
"Ceiling mode" option
Specify the reference calculation method of the maximum output level. It is the same as the oversampling option and True Peak (intersample peak) option of the general limiter VST plug-in.
Peak
Peak is the so-called normal peak and is based on the maximum value of the amplitude of the discrete waveform.
True Peak
True Peak is an intersampled peak with reference to the maximum value of the amplitude after converting discrete waveforms into continuous waveforms.
True Peak (15 kHz Lowpass)
True Peak (15 kHz Lowpass) is based on the intersample peak after low-pass filtering at 15 kHz. You can simulate the peak change due to YouTube's re-encoding, so it's best for making sounds for YouTube.
How to make it operate like a conventional one?
By setting as follows, the same operation as before can be done.
The web service version can be used free although it is limited. For details, please see AI Mastering Pricing .
The smartphone version can be used free of charge.
Can I use it from a smartphone?
Although it has fewer functions than the web service version, there is a smartphone app version that specializes in video mastering. Please download from the App Store link below. Click here to see how to use it.
Can it be used by a corporation?
It is available.
Please register from AI Mastering . ※ However registration for the number of people required is required
Can you incorporate the automatic mastering function into your own service?
Is possible.
Cooperation by API and execution binary is possible. Please inquire details.
Can I do noise reduction?
It is possible with the smartphone version.
The smartphone app version can be downloaded from the App Store link below. Click here to see how to use it.
Can I mix karaoke sound sources and vocals?
The current situation does not correspond, but it is scheduled to be implemented.
Is pitch correction possible?
Current situation does not correspond. It is under consideration.
Can I master my videos?
Both web service version and smartphone version are possible.
Please upload the video file to AI Mastering. Separate the audio and video parts of the movie, master only the audio part, and combine.
When downloading a movie, please download it from the download button under the movie displayed on the mastering result screen instead of the normal download button.
Is the uploaded sound source public?
It will not be published.
Does the uploaded sound source disappear?
It automatically disappears from the old one in about 3 days.
Can I use it without having a credit card?
If you can purchase V Preca at a convenience store, you can subscribe to the premium plan without a credit card. Purchasing for each mastering is also possible.
Can I sign up for a premium plan with PayPal?
can not.
Implementation is under consideration.
I would like to know the mechanism and internal algorithm of AI Mastering.
It is only an overview, but it is summarized here . Please inquire details.
Can I use a JCB credit card?
I'm sorry, but I can not use it.
PayPal settlement is possible if purchasing per mastering. If you can purchase V Preca at a convenience store, you can sign a premium plan.
I want to master in mono
Currently, when mastering a monaural sound source, it is converted to a stereo sound source and output. We are studying the function to output with mono sound source.
I also want to master songs with large dynamic range such as orchestra
It is possible to correspond to a certain extent by setting the target sound pressure to a lower value (such as -12 dB) by custom explosion and designating a song close to the image as a reference sound source.
Which sampling frequency can output?
You can choose from 44.1 kHz, 48 kHz, same as input.
Are there any recruitment for collaborative research?
Please contact us.
Is there a desktop version?
There is Windows version.
Please download from AI Mastering App for PC . The function is almost the same as the web service version, but the Windows version features that you can automatically upload the audio file written in the specified folder to AI Mastering.
Can I use it in browsers other than Chrome (Firefox, Internet Explorer, Safari, etc)?
Although it may work with other browsers, in principle, it supports only the latest Chrome. Those who use other browsers, sorry to trouble you, please install Chrome from here .
Is there a way to master for free at least twice a month?
If you introduce your friends with friends introduction program, you can earn mastering tickets that can be mastered for free. For details, please refer to the Referral Program . (login is needed)
In this article, we will show you how to automatically master audio / video using AI Mastering 's smartphone version.
Install from the following App Store link
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What is mastering?
Mastering is the task of adjusting the sound. By mastering, it makes it easier to hear, and powerful. Simply put, it makes a good sound. By realizing dynamic range, frequency characteristics, sound pressure (loudness) etc, realize it.
For music, professional, amateur, regardless of releasing the song, almost always, mastering is done. For movies, I think that mastering is probably done on commercially available movies and TV programs, but I think that many videos uploaded to YouTube are not mastered. When you listen to the sound of a TV or movie and the sound of YouTube, especially when you listen to the sound of YouTube, it is difficult to listen by the volume difference between the videos (especially difficult to listen to) Saya, time to adjust the volume), there is a difference.
For movies, the word mixing, mixing, MA may be more popular than mastering. What is the difference between these and mastering?
Simply put, it is an image that contains silence, mix and mastering in the MA. Recording -> MA (sound -> mix -> mastering) -> distribution. Since there is a possibility that opinions may differ more than any other person, I do not get deeply involved. ※ In music, the boundary between mix and mastering is ambiguous.
An era where you can shoot, edit, and upload videos with your smartphone
Already there are many useful video editing applications on the App Store. Combining these applications makes it easy to shoot, edit and upload movies with smartphones.
Furthermore, if you combine AI Mastering, you can also automatically master video and audio. You can expect to be able to create movies that make it easier to listen to sounds than ever.
* AI Mastering is an automatic mastering web service that has been provided for composers before. Since full-fledged mastering is possible than the smartphone version, if you are interested also, please do.
AI Mastering Features of the smartphone version
Automatic Mastering
Mastering automatically according to the input sound source.
noise reduction
Cut the noise that has been entered by recording.
YouTube Optimization
Adjust the volume to the optimum level according to YouTube's loudness normalization specification.
How to master audio of video on iPhone
Install the application
Install the application from the App Store.
Register as a free member
AI Mastering is a must-have application. Please sign up with social login by Google, Twitter, Github or by e-mail address and password. Accounts are shared with the smartphone version and web service version, so if you are already registered as a web service version, you can log in with the same ID.
I agree to the terms of service and register my email address
When membership registration is completed, we will transition to the screen below, so we will register your email address and confirm your terms of service.
By default, the mail address used at login is entered in the mail address input field. Please press OK as it is if there is no problem. If you do not enter it or change it, please press OK after input.
Upload a video
Upload videos saved in iPhone photos (photo library). Please press the new button on the screen after login. ※ The movie will not be published. It will be deleted from the old one in about 3 days.
Wait for mastering completion
Once the video is uploaded, the mastering process starts on the server. Eventually, please wait until video encoding is complete.
Download videos
Please click the download button and download the movie after mastering.
How to use is over.
How to use
Use as preprocessing (sound) of video editing
It is a method of using AI Mastering as the original material before video editing.
I think that when you record with iPhone's standard microphone, noise often comes in. Noise can be reduced by passing AI Mastering before video editing. Since the volume is also aligned, it will be easier to handle as a material for movie editing.
Use as a finishing (mastering) after video editing
Using AI Mastering as a finishing before uploading after attaching BGM or sound effect in movie editing.
Overall quality can be raised.
FAQ
What is Loudness Normalization?
Loudness normalization is a function to make the volume of video constant. Since the volume difference between videos is reduced, you do not have to adjust the volume each time the user switches the video.
Loudness normalization is also introduced on YouTube. However, if the volume of the original movie is too small on YouTube, the volume after loudness normalization will remain small. Such videos are also frequent on top YouTuber videos.
With AI Mastering, optimize the volume when playing on YouTube so that it does not become smaller compared to other videos. You can prevent your video from losing power compared to other videos on YouTube.
Loudness normalization has already been introduced on YouTube. Is there any meaning to increase sound pressure now?
It is necessary to ensure the minimum sound pressure according to the level of the loudness normalization, but there is no need to pursue further sound pressure.
However, as a result of analyzing YouTube's video sound, there are not many videos on YouTube that have reached the minimum sound pressure. Easily securing the minimum sound pressure with AI Mastering makes it sound comparable to the surrounding sound. ※ The results of the survey will be reported separately.
Since sound pressure and sound quality are in a tradeoff, it is best to aim at the very close sound pressure at which volume reduction by loudness normalization occurs. Therefore, the sound pressure setting of the smartphone version of AI Mastering is set lower than the web service version.
Using AI Mastering, you can raise the sound pressure without thinking about tradeoffs with sound quality at minimum sound pressure.
Does the volume rise so much that the sound breaks?
AI Mastering has a mechanism to prevent sound cracking called a limiter. The limiter of AI Mastering raises the volume while checking whether the sound is broken, so it may occasionally crack sound, but in most cases it will not sound crack.
However, please note that there may be a sound crack due to re-encoding. Re-encoding is to decode a video encoded in mp4 format etc. once and encode again. As a result, the form of the speech waveform changes and the peak jumps out, which may distort the sound.
Re-encoding is done when editing video or uploading to a video site. AI Mastering gives some margin to the peak in order to prevent sound cracking due to re-encoding, but how much peak will pop out by re-encoding greatly depends on re-encoding settings and the original sound source.
If you break the sound after uploading the movie, if you tell us the site you uploaded (YouTube etc.), we will respond.
What is the difference with other video editing applications?
The difference between AI Mastering and other video editing applications is where AI Mastering specializes in sound. Because I can not edit video instead of specializing in sound, I think that it is good to use it together with other video editing application.
It is a comparison table with movie editing application that can be used on iPhone.
Sound pressure bombardment kun
Premiere Rush
Premiere Clip
iMovie
InShot
VivaVideo
Supported environment
iPhone, PC
iPhone, iPad, PC (Premiere)
iPhone, iPad, Android, PC (Premiere)
iPhone, iPad, PC
iPhone, iPad, Android
iPhone, iPad, Android
Automatic Mastering
o
x
x
x
x
x
Overall volume adjustment (YouTube optimization)
o
x
x
x
x
x
Dynamic range adjustment
o
o (sound balance)
x
x
x
x
noise reduction
o
o
x
x
x
x
Echo reduction
x
o
x
x
x
x
Speech emphasis
x
o
x
x
x
x
Adjust volume between clips
N / A
o (Automatic volume)
o (Smart volume)
x
x
x
Ducking
N / A
o
x
x
x
x
Movie editing
x
o
o
o
o
o
Selling agency
Our company
Adobe
Adobe
Apple
InstaShot Inc.
QuVideo Inc.
* Applications that can be used on PC are also included, but they are compared by the function of the smart version. x means that the function could not be confirmed on the surface. It may be implicitly implemented.
Will you be charged?
The smartphone version is free. A portion of the Web service version is charged. For details of the Web service version, please see AI Mastering .
What is the difference from the web service version?
The application version is specialized in movies with simple functions. The web service version is generic and can be used for both music production and motion picture production use. Since user accounts are shared, you can log in to both the application version and the web service version with the same ID. It is also possible to download videos uploaded with the application version from the web service version. Prices are free for all application versions, some for free on the web service version and some are charged.
Please see AI Mastering for details of the web service version.
Is there an iPad version?
It is under development.
Is there an Android version?
It is under development.
Is the sound source uploaded to the server public?
It will not be published.
Will the sound source uploaded to the server be deleted?
It will be deleted in about 3 days from the old one.
Does communication occur?
Because it processes video on server, communication volume is large. Please use it in Wifi environment.
Is there a version that processes locally only without communicating?
There is no present condition. It is under consideration.
※ The information in this article is as of 12/02/2018, may differ from the latest information. For the latest information, please see AI Mastering or the App Store.
In this article, we will show you how to join AI Mastering 's affiliate program for free for affiliate (affiliate marketer).
What is AI Mastering?
AI Mastering is an automatic online audio mastering service.
Mastering is the task of adjusting the sound. It is necessary for music production and movie production. Mastering makes the sound easier to hear, the impressions come out and the impression gets better.
With AI Mastering, mastering can be done with one touch.
Affiliate Program Overview
When you participate in AI Mastering's affiliate program, you can receive affiliate fee when introducing AI Mastering's new member registration and new premium plan registration.
Participation in the affiliate program is free.
Affiliate is provided by itself without using ASP (Affiliate Service Provider), so it is characterized by no margin by ASP.
Affiliate Program Rewards
Affiliate fees of $ 0.05 will be incurred when introducing new member registration and $ 15 when introducing new premium plan registration. The compensation generation condition is the same as the Referral Program . For details, please visit there. (login is needed)
How to participate in affiliate program
Free membership with AI Mastering
AI Mastering's affiliate program does not use the affiliate network, so you will manage affiliate rewards with your AI Mastering account. Please register as a free member here.
If you do not know how to register as a member,This articlePlease also refer to it.
Apply for participation by e-mail
Please send a mail with the following contents to aimasteringcom@gmail.com. To participate, it is necessary to agree to Affiliate Program Terms of Service .
To: aimasteringcom@gmail.com
Subject: Sound pressure bomb kun affiliation program Application details:
I have read and agree to https: //aimastering.com/affiliate_terms_of_service/,
I will apply for participation in the affiliate program of sound pressure explosion kun.
Below is application information.
E-mail address registered for sound pressure bomb kun: (Please input)
Remuneration receipt account type: PayPal account / Japanese bank account (Please choose one or the other)
## When choosing PayPal account E-mail address of PayPal account or PayPal.Me's address: (Please enter)
## When choosing Japanese bank account Bank name: (please enter)
Branch name: (Please enter)
Branch code: (Please enter)
Account type: (Please enter)
Account number: (Please enter)
Name: (Please enter)
that's all, thank you very much.
※ At the time of sending e-mail, it is considered to have agreed to Affiliate Program Terms of Service.
Wait for approval
After you activate your affiliate program with the AI Mastering account corresponding to the email address you sent, I will reply by e-mail. Please wait a moment.
Acquire the introduction URL for affiliate and put it on blog etc.
Acquire the introduction URL for affiliate from affiliate program , and paste it on blog etc. For referrals, materials for affiliate programs described below can also be used.
Review report
You can check the report from the Affiliate Program . However, it will not be displayed unless there is at least one referral.
Material for affiliate program
Materials listed in the following articles can be freely processed and used for affiliate purposes.
What is the difference between introducing friends?
Your friends referral and payment terms are the same, but the content of remuneration is different. Participants in the affiliate program can receive affiliate fees in addition to the referring fee for referring friends when the compensation granting conditions are satisfied. Please refer to the Referral Program for details of compensation generation conditions and so on. (login is needed)
Will the reward of the premium plan be received every month after the first time if the user continues to use it?
I can not receive it. Remuneration will be given only during introduction.
Summary
We showed you how to participate in AI Mastering's affiliate program.
We publish material for affiliate program of AI Mastering . The following materials can be freely processed and used only for the affiliate program use.
For more information on affiliate programs, please see this article .
In this article, I will explain the basic usage of AI Mastering for those using AI Mastering for the first time.
What is AI Mastering?
AI Mastering is an automatic online audio mastering service.
Mastering is the task of adjusting the sound. It is necessary for music production and movie production. Mastering makes the sound easier to hear, the impressions come out and the impression gets better.
With AI Mastering, mastering can be done with one touch.
Register for membership
Free membership registration is required to use AI Mastering. Register as a member here. Membership registration can be done by social login (Github, Google, Twitter) or email address.
Perform social login
On the screen below, please select one of Github, Google, Twitter. Please ask for permission for each service so please allow it.
Register by mail address
Please select "User Registration" tab, enter your e-mail address and password, confirm the terms of use and privacy policy, and register as a user.
Register your e-mail address and check the terms of use
When membership registration is completed, we will transition to the screen below, so we will register your email address and confirm your terms of service.
By default, the mail address used at login is entered in the mail address input field. Please press OK as it is if there is no problem. If you do not enter it or change it, please press OK after entering it.
Mastering
Upload mastering target sound source
When membership registration is completed, I think that it is transitioning to the following home screen. Please drag and drop the sound source file from the PC on this screen. Since this time is a tutorial, it is recommended to try it with a sound source of less than 2 minutes which you can try free of charge any number of times. Please note that the extension of the sound source file is .wav, .mp3, .mp4.
Taking the dragged file on the browser screen will change to the screen shown below. Please drop the file to the drop zone in the center as it is. Upload will start. Uploaded files will not be published. Also, it will be deleted in about 3 days from the old one.
Select the setting of mastering
When the upload is completed, you will see the following screen, so select the mastering setting. For this time, we will choose one-touch bombings that are easy to use with less configuration. Please press the execute button as it is.
Wait for completion of mastering
As the screen changes to the screen as below, wait until mastering is completed.
Watch and download the sound source after mastering
When mastering is completed, the preview button and the download button are displayed as follows. You can compare and listen to the sound sources before and after mastering with the preview button.
If you are satisfied with the sound source, download the sound source after mastering with the Download Mastered button.
That is the basic flow of mastering.
Mastering for more than 2 minutes
In AI Mastering, mastering of less than 2 minutes is free for any number of times, mastering for 2 minutes or more is free once a month. Finally, I will show you how to do mastering for more than 2 minutes.
Upload sound source and wait for mastering completion
First of all like the tutorial, upload the sound source and wait for the mastering completion. Up to this point is the same as the tutorial, but in the case of a sound source longer than two minutes, the download button has been Download Mastered (Preview), as shown in the image below, and the preview cut out the first two minutes of the sound source Only sound source download is enabled.
There are four ways to make full sound source downloadable from this state, so I will explain in order.
How to make full sound source downloadable for free
Mastering free for up to once a month
Click the button at the bottom of the screen below to make the full audio downloadable for free, the free mastering count will be consumed and the full audio will be downloadable.
Mastering free on mastering tickets you got with friends referral
If you introduce your friends with friends introduction program, you can earn mastering tickets that can be mastered for free. For details, please refer to the Referral Program . (login is needed)
How to make full sound source downloadable for a fee
Register to premium plan
If you register for the premium plan of monthly billing ($ 29.99 / month), you can master any number of times per month. Settlement is only available for credit card transactions.
Purchase each time mastering
It is also possible to purchase for each mastering. The price is $ 9.99 / times. It corresponds to credit card transaction and PayPal.
Summary
We introduced the basic usage of AI Mastering.
※ The information in this article is current as of November 27, 2018 and may be different from the latest information. For the latest information please see AI Mastering .
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