aptX-LL Duplex profile missing for Ankbit E700
Along the same lines as #1883 (closed), I do not see duplex profile for aptX-LL for the Ankbit E700 headphones.
aptX LL, aptX HD, LDAC etc. all are correctly listed and functional output profiles.
avinfo
shows "Bidirectional link: No" - is this definitive?
Connecting ...
Stream End-Point #10: Audio Sink
Media Codec: Vendor Specific A2DP Codec
Vendor ID 0x0000012d
Vendor Specific Codec ID 0x00aa
Vendor Specific Data: 0x3c 0x07
Vendor Specific Value (LDAC)
Frequencies: 44.1kHz 48kHz 88.2kHz 96kHz
Channel modes: Mono Dual Stereo
Content Protection: SCMS-T
Stream End-Point #8: Audio Sink
Media Codec: Vendor Specific A2DP Codec
Vendor ID 0x000000d7
Vendor Specific Codec ID 0x0002
Vendor Specific Data: 0x32 0x02 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
Content Protection: SCMS-T
Stream End-Point #6: Audio Sink
Media Codec: Vendor Specific A2DP Codec
Vendor ID 0x0000000a
Vendor Specific Codec ID 0x0002
Vendor Specific Data: 0x32 0x02 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
Vendor Specific Value (aptX Low Latency)
Frequencies: 44.1kHz 48kHz
Channel modes: Stereo
Bidirectional link: No
Target codec buffer level: 0
Initial codec buffer level: 0
SRA max rate: 0
SRA averaging time: 0s
Good working codec buffer level: 0
Content Protection: SCMS-T
Stream End-Point #7: Audio Sink
Media Codec: Vendor Specific A2DP Codec
Vendor ID 0x000000d7
Vendor Specific Codec ID 0x0024
Vendor Specific Data: 0x32 0x00 0x00 0x00 0x00
Vendor Specific Value (aptX HD)
Frequencies: 44.1kHz 48kHz
Channel modes: Stereo
Content Protection: SCMS-T
Stream End-Point #5: Audio Sink
Media Codec: Vendor Specific A2DP Codec
Vendor ID 0x0000004f
Vendor Specific Codec ID 0x0001
Vendor Specific Data: 0x32
Vendor Specific Value (aptX)
Frequencies: 44.1kHz 48kHz
Channel modes: Stereo
Content Protection: SCMS-T
Stream End-Point #3: Audio Sink
Media Codec: MPEG24
Object Types: MPEG-2 AAC LC MPEG-4 AAC LC
Frequencies: 8kHz 11.025kHz 12kHz 16kHz 22.05kHz 24kHz 32kHz 44.1kHz 48kHz
Channels: 1 2
Bitrate: 320000
VBR: Yes
Content Protection: SCMS-T
Stream End-Point #1: Audio Sink
Media Codec: SBC
Channel Modes: Mono DualChannel Stereo JointStereo
Frequencies: 16Khz 32Khz 44.1Khz 48Khz
Subbands: 4 8
Blocks: 4 8 12 16
Bitpool Range: 2-53
Content Protection: SCMS-T
pipewire 1:0.3.77-2 Linux 6.4.10 (Arch Linux)