How can I do metering/average peak power level in OpenAL?

How can I do metering/average peak power level in OpenAL?

By : AkshatDas
Date : November 20 2020, 07:00 PM
help you fix your problem I'm assuming you're looking for a drop-in replacement of AVAudioPlayer's peakPowerForChannel: method. Unfortunately, there is none. You'll have to roll your own.
OpenAL "sounds" are a combination of a "buffer" (your sample data, loaded in memory) and a "source," which represents something like properties you want applied to your sample data.
code :

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AVAudioRecorder: peak and average power

AVAudioRecorder: peak and average power

By : dzyga
Date : March 29 2020, 07:55 AM
this will help While I've not looked at those values, since it's related to audio volume, I'd guess that it's measured as a change in decibels.
0 would be maximum loudness and anything quieter than that could be expressed as a drop in decibels.
Trying to understand AVAudioPlayer and audio level metering

Trying to understand AVAudioPlayer and audio level metering

By : Moogle
Date : March 29 2020, 07:55 AM
hope this fix your issue You're updating and then asking for the value of the meters almost immediately after the sound starts -- that updateMeters is probably running a few tens of milliseconds after you send play. So if there's any silence at the beginning of the clip, you could very well be getting the correct reading. You should trying delaying your inspection, and you may also need to send updateMeters inside the loop, right before you inspect the values.
You're also never actually getting the meter values for channels > 0, because you pass 0 no matter what the value of i is in the loop. I think you meant to do this:
code :
for (int currChan = 0; currChan < channels; currChan++) {
    //Log the peak and average power
    NSLog(@"%d %0.2f %0.2f", currChan, [audioPlayer peakPowerForChannel:currChan], [audioPlayer averagePowerForChannel:currChan]);
AVPlayer Live stream how to get power for audio level metering, something new?

AVPlayer Live stream how to get power for audio level metering, something new?

By : Diego Siena
Date : March 29 2020, 07:55 AM
To fix this issue i think this link is helping you https://github.com/tumtumtum/StreamingKit
Level Metering with AVAudioEngine

Level Metering with AVAudioEngine

By : heaphintronik
Date : March 29 2020, 07:55 AM
wish help you to fix your issue Try to install a tap on main mixer, then make it faster by setting the framelength, then read the samples and get average, something like this:
AVPlayer Live stream how to get power for audio level metering

AVPlayer Live stream how to get power for audio level metering

By : lakshmi
Date : March 29 2020, 07:55 AM
wish help you to fix your issue Ordinarily, you can get at the audio samples of an AVPlayer by using an MTAudioProcessingTap on the player item, however your asset resists this through
the tracks property on your AVURLAsset never becoming available not calling you back when you observe and attach the tap to your playerItem.tracks's assetTrack.
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