Re: iOS Bluetooth HFP speech codec bandwidth
Re: iOS Bluetooth HFP speech codec bandwidth
- Subject: Re: iOS Bluetooth HFP speech codec bandwidth
- From: yinweixu <email@hidden>
- Date: Thu, 01 Nov 2018 11:31:35 +0800
- Feedback-id: bizmailfree:movnow.com:qybgforeign:qybgforeign4
[AVAudioSession.sharedInstance setCategory:AVAudioSessionCategoryPlayAndRecord
withOptions:AVAudioSessionCategoryOptionMixWithOthers |
AVAudioSessionCategoryOptionAllowBluetooth error:nil];
[AVAudioSession.sharedInstance setMode:AVAudioSessionModeDefault error:nil];
[AVAudioSession.sharedInstance setActive:YES error:nil];
------------------ Original ------------------
From: "Woo-Suk Lee";
Date: 2018年11月1日(星期四) 中午11:07
To: "bluetooth-dev";
Subject: Re: iOS Bluetooth HFP speech codec bandwidth
Hello,
It seems that the latest iOS doesn’t support wide band speech codec over
Bluetooth HFP.
As I tested airPod and other Bluetooth headset supporting HFP1.6 wide band
speech codec with the test setup below,
airPod or BT receiver —> iOS —> voice call —> Android (Galaxy S8) —> Voice call
recording
It just shows the narrow band speech, which has signals over 20~3KHz only.
And the two test setup below show the same result with the full 7KHz bandwidth.
iPhone built-in mic —> iOS —> voice call —> Android (Galaxy S8) —> Voice call
recording
BT receiver —> Android(Galaxy S8) —> voice call —> Android (Galaxy S8) —> Voice
call recording
It seems the current iOS doesn’t support Wideband Voice Codec over Bluetooth
HFP.
Anyone exeriencing the same issue?
Thanks!
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