Re: Audio cracks with the iPad 11"
Re: Audio cracks with the iPad 11"
- Subject: Re: Audio cracks with the iPad 11"
- From: Martin Man <email@hidden>
- Date: Wed, 14 Nov 2018 22:52:33 +0100
Hi Dean,
What’s the
https://developer.apple.com/documentation/avfoundation/avaudiosession/1616499-samplerate?language=objc
reporting back to you?
Martin (still unable to test on 11”)
> On 14 Nov 2018, at 14:24, Dean Reyburn <email@hidden> wrote:
>
> Hi Pascal,
> I have found a possible solution for my recording (only) app which was giving
> distortion on iPad Pro gen 3 . My older versions record only at 44.1khz.
> When I change to 48khz the recording is perfect. Either sample rate works
> fine for my app, but I simply need to know during intitialization which to
> use.
>
> I’m still talking to Apple DTS about how to detect whether a device wants or
> needs 44.1khz or 48khz. There are no error returned when an iPad Pro gen 3
> from AudioUnitSetProperty() or any other audio units call on iPad Pro 3 when
> starting recording. The iPad Pro 3 accepts 44.1khz and confirms that it can
> do this sample rate with AudioUnitGetProperty() even though the recording is
> distorted.
>
> So far I have not found how to detect the “default” or “native” recording
> sample rate for a device if such a thing exists.
>
> -Dean
>
>> On Nov 14, 2018, at 5:02 AM, Flavio Antonioli <email@hidden
>> <mailto:email@hidden>> wrote:
>>
>> Pascal,
>>
>> we have also received reports from some of our users of audio distortion on
>> the new iPad Pro. We too are using RemoteIO.
>> We don't currently have a device to test with so I wasn't able to reproduce
>> the issue.
>>
>> Flavio.
>>
>> On Tue, Nov 13, 2018 at 9:00 PM <email@hidden
>> <mailto:email@hidden>> wrote:
>> Message: 2
>> Date: Tue, 13 Nov 2018 16:43:53 +0100
>> From: Pascal Douillard <email@hidden
>> <mailto:email@hidden>>
>> To: email@hidden <mailto:email@hidden>
>> Subject: Audio cracks with the iPad 11"
>> Message-ID: <email@hidden
>> <email@hidden">mailto:email@hidden>>
>> Content-Type: text/plain; charset=utf-8
>>
>> Hi everyone,
>>
>> I have an audio app for iPad & iPhone and I have been getting audio cracks
>> on the new iPad Pro 11”. The cracks happen on speakers and on headphones on
>> the USB-C port but not when using bluetooth headphones like the Air Pods.
>>
>> They do not happen on any of the other iPads or iPhone.
>>
>> The audio engine is in C++ and is running in Core Audio using a single
>> RemoteIO unit. No extra audio libraries are used.
>>
>> This is not related to the forced 48K sample rate of the iPad 11” as the app
>> runs fine with the same sample rate on other devices.
>>
>> Anyone else has experienced the same? Thanks.
>>
>> Pascal
>>
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> Reyburn CyberTuner, Inc.
> http://www.cybertuner.com <http://www.cybertuner.com/>
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