Iphone Audio Filter Programming

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Adjust the audio settings on iPhone - Apple Support

https://support.apple.com/guide/iphone/audio-settings-iph3e2e2cdc/ios

Go to Settings > Accessibility > Audio/Visual.. Adjust any of the following: Mono Audio: Turn on to combine the left and right channels to play the same content. Balance: Drag the Left Right Stereo Balance slider. Phone Noise Cancellation: Turn on to reduce ambient background noise on phone calls when you’re holding the receiver to your ear.

Audio - Apple Developer

https://developer.apple.com/audio/

Working with Audio. Apple platforms provide a comprehensive set of audio frameworks and technologies that are essential to creating a rich app experience. Use them to immerse your users in multichannel audio with spatial rendering, process sound in realtime using AVAudioEngine, and engage the creativity of enthusiasts and professionals through ...

audio - iPhone microphone high-pass filter - Stack Overflow

https://stackoverflow.com/questions/2111467/iphone-microphone-high-pass-filter

Using an FFT would be a sledgehammer solution in this case. A simple FIR or IIR filter should suffice, but you need to decide on the design parameters for the filter first, i.e. cut-off frequency (-3 dB point), pass-band ripple, stop-band gain, and whether you care about phase response or not.

Using Audio - Apple Developer

https://developer.apple.com/library/archive/documentation/AudioVideo/Conceptual/MultimediaPG/UsingAudio/UsingAudio.html

iOS offers a rich set of tools for working with sound in your application. These tools are arranged into frameworks according to the features they provide, as follows:. Use the Media Player framework to play songs, audio books, or audio podcasts from a user’s iPod library. For details, see Media Player Framework Reference, iPod Library Access Programming Guide, …

Customize headphone audio levels on your iPhone or …

https://support.apple.com/en-us/HT211218

Put your AirPods Pro in your ears and connect them to your iPhone or iPad. Go to Settings > Accessibility > Audio/Visual > Headphone Accommodations > Transparency Mode. Tap Custom Transparency Mode and turn it on. To adjust the audio-volume balance between left and right channels, adjust the Transparency Balance slider.

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