Dear Chris,
I tried again with pulse disabled completely and that makes no
difference. My laptop only has usb 2.0 ports but I also tried the dac on
an express card usb 3 adapter (which works fine at usb 3 speed with an
external hard disk) and that makes no difference either.
My usb cables are really different, one is a high grade 1,5m cable. The
other one is just a 2m basic printer cable. Thing are not worse with the
basic cable than with the expensive one...
I do not have any other dacs, but I tried the same dac with different
computers. Under Ubuntu (a somewhat older release running kernel 3.9) I
have the same issue. On a windows laptop things worked fine (hard to
admit) with the same cable as before. I had to install the driver _and_
the media player provided by teac to get things working though. The TEAC
media player told me it was sending the data to the dac at 24/88.2 but I
have to take its word for it.
Finally, this is what I see in /proc/asound/card1/stream0
$ cat stream0
TEAC TEAC USB AUDIO DEVICE at usb-0000:03:00.0-2, high speed : USB Audio
Playback:
Status: Running
Interface = 3
Altset = 2
Packet Size = 88
Momentary freq = 80188 Hz (0xa.0600)
Feedback Format = 16.16
Interface 3
Altset 1
Format: S16_LE
Channels: 2
Endpoint: 3 OUT (ASYNC)
Rates: 32000, 44100, 48000, 88200, 96000, 176400, 192000
Data packet interval: 125 us
Interface 3
Altset 2
Format: S24_3LE
Channels: 2
Endpoint: 3 OUT (ASYNC)
Rates: 32000, 44100, 48000, 88200, 96000, 176400, 192000
Data packet interval: 125 us
So it does seem that the dac is running in 24 bit mode. The momentary
frequency varies and reaches 96000 at times (on a 88200kHz file), is
that normal?
On mar., 2013-12-17 at 20:51 -0800, chris hermansen wrote:
> Rutger et al;
>
>
> On Sun, Dec 15, 2013 at 11:31 AM, Rutger Noot
> <[email protected]> wrote:
> Dear Chris,
>
> Thanks for your answer and for taking interest!
>
>
> Well I am no expert at any of this; I hope that one of the devs will
> chime in here...
>
>
>
>
>
> On dim., 2013-12-15 at 09:56 -0800, chris hermansen wrote:
> > Rutger et all,
> >
> > On Dec 15, 2013 9:38 AM, "Rutger Noot"
> <[email protected]>
> > wrote:
> > >
> > > Hi,
> > >
> > > I have difficulties with the TEAC UD-H01 usb dac. Playback
> is fine
> > in 16
> > > bit mode (even at sample rates up to 192kHz), but in 24
> bit mode
> > there
> > > is an incredible amount of jitter (continuous clicking) at
> any
> > sample
> > > rate above 48kHz. Admittedly, there should be little (if
> any)
> > audible
> > > difference passing from 16 to 24 bits, but still it should
> work.
> > >
> > > After discovering this by playing music through rhythmbox
> and
> > > pulseaudio, I have tested by converting a wav-file to
> different
> >
> > Rhythmbox uses Pulse as far as I know, and Pulse resamples
> again
> > AFAIK. At least I have never been able to convince Pulse to
> "leave
> > things alone". Pulse then passes the resampled stuff to
> Alsa.
> >
>
>
> That's also what I found. If I ask pulse to use S16_LE things
> are OK, but
> setting to S24_LE causes all those artefacts. Anyway, for
> further
> testing, rhythmbox & pulse are a bad choice.
>
>
> Can you disable Pulse completely? Or at least set it so that the
> default sound device is the internal audio chip? That way we can
> perhaps rule out that it is somehow interfering with your aplay
> experiments...
>
>
> To disable it completely (temporarily) you should be able to replace
> the line
>
> ; autospawn = yes
>
>
> with
>
>
> autospan = no
>
>
>
> > Players that I know that will play directly to Alsa: mpd,
> QuodLibet,
> > Guayadeque.
> >
> > > combinations of sample-size/sample-rates and playing
> directly
> > through
> > > aplay. So the problem seems to come from the alsa driver.
> Any hints
> > on
> > > what to try?
> > >
> > > PS using kernel 3.11.10 on fedora 18.
> >
> > With aplay have you tried using the plughw output device
> associated
> > with the Teac unit?
> >
> > You can figure that out with "aplay -l" and/or "aplay -L".
>
>
> I tried with hw:1,0 and (just now) with plughw:1,0 The result
> is the
> same. Changing USB cables didn't help either.
>
>
> Can you try other USB ports on the computer? For instance, any USB-3
> ports (I have a problem with a System76 laptop that won't play hi-res
> files without weird static/distortion through an AudioQuest DragonFly
> on its USB2 port but is fine on a USB3 port).
>
>
> Are your USB cables distinctly different, ie not just two exactly the
> same? How long are they? Are they USB-2 compatible?
>
>
>
> >
> > Do you have other USB cables to try?
>
>
>
> Do you have another 24/96 compatible DAC you can try?
>
>
> >
> > If none of those help you need to send some diagnostic
> info... The two
> > aplay outputs above and I guess the output of "lsusb".
> >
>
>
> Some diagnostics output is given below.
> Thanks again,
> Rutger.
>
> (I am talking about card 1)
> ==============
>
> $ aplay -l
> **** List of PLAYBACK Hardware Devices ****
> card 0: PCH [HDA Intel PCH], device 0: 92HD90BXX Analog
> [92HD90BXX Analog]
> Subdevices: 0/1
> Subdevice #0: subdevice #0
> card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
> Subdevices: 1/1
> Subdevice #0: subdevice #0
> card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
> Subdevices: 1/1
> Subdevice #0: subdevice #0
> card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2]
> Subdevices: 1/1
> Subdevice #0: subdevice #0
> card 1: DEVICE [TEAC USB AUDIO DEVICE], device 0: USB Audio
> [USB Audio]
> Subdevices: 1/1
> Subdevice #0: subdevice #0
>
> ==========================
>
> $ aplay -L
> null
> Discard all samples (playback) or generate zero samples
> (capture)
> pulse
> PulseAudio Sound Server
> default
> Default ALSA Output (currently PulseAudio Sound Server)
> sysdefault:CARD=PCH
> HDA Intel PCH, 92HD90BXX Analog
> Default Audio Device
> front:CARD=PCH,DEV=0
> HDA Intel PCH, 92HD90BXX Analog
> Front speakers
> surround40:CARD=PCH,DEV=0
> HDA Intel PCH, 92HD90BXX Analog
> 4.0 Surround output to Front and Rear speakers
> surround41:CARD=PCH,DEV=0
> HDA Intel PCH, 92HD90BXX Analog
> 4.1 Surround output to Front, Rear and Subwoofer speakers
> surround50:CARD=PCH,DEV=0
> HDA Intel PCH, 92HD90BXX Analog
> 5.0 Surround output to Front, Center and Rear speakers
> surround51:CARD=PCH,DEV=0
> HDA Intel PCH, 92HD90BXX Analog
> 5.1 Surround output to Front, Center, Rear and Subwoofer
> speakers
> surround71:CARD=PCH,DEV=0
> HDA Intel PCH, 92HD90BXX Analog
> 7.1 Surround output to Front, Center, Side, Rear and
> Woofer speakers
> hdmi:CARD=PCH,DEV=0
> HDA Intel PCH, HDMI 0
> HDMI Audio Output
> hdmi:CARD=PCH,DEV=1
> HDA Intel PCH, HDMI 1
> HDMI Audio Output
> hdmi:CARD=PCH,DEV=2
> HDA Intel PCH, HDMI 2
> HDMI Audio Output
> sysdefault:CARD=DEVICE
> TEAC USB AUDIO DEVICE, USB Audio
> Default Audio Device
> front:CARD=DEVICE,DEV=0
> TEAC USB AUDIO DEVICE, USB Audio
> Front speakers
> surround40:CARD=DEVICE,DEV=0
> TEAC USB AUDIO DEVICE, USB Audio
> 4.0 Surround output to Front and Rear speakers
> surround41:CARD=DEVICE,DEV=0
> TEAC USB AUDIO DEVICE, USB Audio
> 4.1 Surround output to Front, Rear and Subwoofer speakers
> surround50:CARD=DEVICE,DEV=0
> TEAC USB AUDIO DEVICE, USB Audio
> 5.0 Surround output to Front, Center and Rear speakers
> surround51:CARD=DEVICE,DEV=0
> TEAC USB AUDIO DEVICE, USB Audio
> 5.1 Surround output to Front, Center, Rear and Subwoofer
> speakers
> surround71:CARD=DEVICE,DEV=0
> TEAC USB AUDIO DEVICE, USB Audio
> 7.1 Surround output to Front, Center, Side, Rear and
> Woofer speakers
> iec958:CARD=DEVICE,DEV=0
> TEAC USB AUDIO DEVICE, USB Audio
> IEC958 (S/PDIF) Digital Audio Output
>
> ==============================
>
> $ lsusb
> Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate
> Matching Hub
> Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate
> Matching Hub
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> Bus 001 Device 003: ID 413c:8187 Dell Computer Corp. DW375
> Bluetooth Module
> Bus 001 Device 004: ID 1bcf:2980 Sunplus Innovation Technology
> Inc.
> Bus 002 Device 003: ID 046d:c52b Logitech, Inc. Unifying
> Receiver
> Bus 002 Device 005: ID 0644:8038 TEAC Corp.
> Bus 002 Device 004: ID 0a5c:5800 Broadcom Corp. BCM5880 Secure
> Applications Processor
>
> =======================================
>
> $sudo lsusb -v -d0644:8038
>
> Bus 002 Device 005: ID 0644:8038 TEAC Corp.
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 239 Miscellaneous Device
> bDeviceSubClass 2 ?
> bDeviceProtocol 1 Interface Association
> bMaxPacketSize0 64
> idVendor 0x0644 TEAC Corp.
> idProduct 0x8038
> bcdDevice 0.03
> iManufacturer 1 TEAC
> iProduct 2 TEAC USB AUDIO DEVICE
> iSerial 0
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 220
> bNumInterfaces 3
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0x80
> (Bus Powered)
> MaxPower 500mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 1
> bInterfaceClass 3 Human Interface Device
> bInterfaceSubClass 0 No Subclass
> bInterfaceProtocol 0 None
> iInterface 0
> HID Device Descriptor:
> bLength 9
> bDescriptorType 33
> bcdHID 1.00
> bCountryCode 0 Not supported
> bNumDescriptors 1
> bDescriptorType 34 Report
> wDescriptorLength 26
> Report Descriptors:
> ** UNAVAILABLE **
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0020 1x 32 bytes
> bInterval 6
> Interface Association:
> bLength 8
> bDescriptorType 11
> bFirstInterface 2
> bInterfaceCount 2
> bFunctionClass 1 Audio
> bFunctionSubClass 0
> bFunctionProtocol 32
> iFunction 4 TEAC USB HS ASYNC AUDIO DEVICE
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 2
> bAlternateSetting 0
> bNumEndpoints 0
> bInterfaceClass 1 Audio
> bInterfaceSubClass 1 Control Device
> bInterfaceProtocol 32
> iInterface 4 TEAC USB HS ASYNC AUDIO DEVICE
> AudioControl Interface Descriptor:
> bLength 9
> bDescriptorType 36
> bDescriptorSubtype 1 (HEADER)
> bcdADC 2.00
> bCategory 10
> wTotalLength 54
> bmControl 0x00
> AudioControl Interface Descriptor:
> bLength 8
> bDescriptorType 36
> bDescriptorSubtype 10 (CLOCK_SOURCE)
> bClockID 12
> bmAttributes 0x07 Internal programmable Clock
> (synced to SOF)
> bmControls 0x07
> Clock Frequency Control (read/write)
> Clock Validity Control (read-only)
> bAssocTerminal 0
> iClockSource 0
> AudioControl Interface Descriptor:
> bLength 8
> bDescriptorType 36
> bDescriptorSubtype 10 (CLOCK_SOURCE)
> bClockID 13
> bmAttributes 0x07 Internal programmable Clock
> (synced to SOF)
> bmControls 0x07
> Clock Frequency Control (read/write)
> Clock Validity Control (read-only)
> bAssocTerminal 0
> iClockSource 0
> AudioControl Interface Descriptor:
> bLength 17
> bDescriptorType 36
> bDescriptorSubtype 2 (INPUT_TERMINAL)
> bTerminalID 4
> wTerminalType 0x0101 USB Streaming
> bAssocTerminal 0
> bCSourceID 12
> bNrChannels 2
> bmChannelConfig 0x00000003
> Front Left (FL)
> Front Right (FR)
> bmControls 0x0000
> iChannelNames 0
> iTerminal 0
> AudioControl Interface Descriptor:
> bLength 12
> bDescriptorType 36
> bDescriptorSubtype 3 (OUTPUT_TERMINAL)
> bTerminalID 3
> wTerminalType 0x0605 SPDIF interface
> bAssocTerminal 0
> bSourceID 4
> bCSourceID 12
> bmControls 0x0000
> iTerminal 0
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 3
> bAlternateSetting 0
> bNumEndpoints 0
> bInterfaceClass 1 Audio
> bInterfaceSubClass 2 Streaming
> bInterfaceProtocol 32
> iInterface 0
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 3
> bAlternateSetting 1
> bNumEndpoints 2
> bInterfaceClass 1 Audio
> bInterfaceSubClass 2 Streaming
> bInterfaceProtocol 32
> iInterface 0
> AudioStreaming Interface Descriptor:
> bLength 16
> bDescriptorType 36
> bDescriptorSubtype 1 (AS_GENERAL)
> bTerminalLink 4
> bmControls 0x00
> bFormatType 1
> bmFormats 1
> PCM
> bNrChannels 2
> bmChannelConfig 0x00000003
> Front Left (FL)
> Front Right (FR)
> iChannelNames 0
> AudioStreaming Interface Descriptor:
> bLength 6
> bDescriptorType 36
> bDescriptorSubtype 2 (FORMAT_TYPE)
> bFormatType 1 (FORMAT_TYPE_I)
> bSubslotSize 2
> bBitResolution 16
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x03 EP 3 OUT
> bmAttributes 5
> Transfer Type Isochronous
> Synch Type Asynchronous
> Usage Type Data
> wMaxPacketSize 0x0068 1x 104 bytes
> bInterval 1
> AudioControl Endpoint Descriptor:
> bLength 8
> bDescriptorType 37
> bDescriptorSubtype 1 (EP_GENERAL)
> bmAttributes 0x00
> bmControls 0x00
> bLockDelayUnits 2 Decoded PCM samples
> wLockDelay 2
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x84 EP 4 IN
> bmAttributes 17
> Transfer Type Isochronous
> Synch Type None
> Usage Type Feedback
> wMaxPacketSize 0x0004 1x 4 bytes
> bInterval 4
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 3
> bAlternateSetting 2
> bNumEndpoints 2
> bInterfaceClass 1 Audio
> bInterfaceSubClass 2 Streaming
> bInterfaceProtocol 32
> iInterface 0
> AudioStreaming Interface Descriptor:
> bLength 16
> bDescriptorType 36
> bDescriptorSubtype 1 (AS_GENERAL)
> bTerminalLink 4
> bmControls 0x00
> bFormatType 1
> bmFormats 1
> PCM
> bNrChannels 2
> bmChannelConfig 0x00000003
> Front Left (FL)
> Front Right (FR)
> iChannelNames 0
> AudioStreaming Interface Descriptor:
> bLength 6
> bDescriptorType 36
> bDescriptorSubtype 2 (FORMAT_TYPE)
> bFormatType 1 (FORMAT_TYPE_I)
> bSubslotSize 3
> bBitResolution 24
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x03 EP 3 OUT
> bmAttributes 5
> Transfer Type Isochronous
> Synch Type Asynchronous
> Usage Type Data
> wMaxPacketSize 0x009c 1x 156 bytes
> bInterval 1
> AudioControl Endpoint Descriptor:
> bLength 8
> bDescriptorType 37
> bDescriptorSubtype 1 (EP_GENERAL)
> bmAttributes 0x00
> bmControls 0x00
> bLockDelayUnits 2 Decoded PCM samples
> wLockDelay 2
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x84 EP 4 IN
> bmAttributes 17
> Transfer Type Isochronous
> Synch Type None
> Usage Type Feedback
> wMaxPacketSize 0x0004 1x 4 bytes
> bInterval 4
> Device Qualifier (for other device speed):
> bLength 10
> bDescriptorType 6
> bcdUSB 2.00
> bDeviceClass 239 Miscellaneous Device
> bDeviceSubClass 2 ?
> bDeviceProtocol 1 Interface Association
> bMaxPacketSize0 64
> bNumConfigurations 1
> Device Status: 0x0000
> (Bus Powered)
>
>
>
>
> When you have a 96/24 file playing with aplay, can you open a terminal
> window and
>
> cd /proc/asound/DEVICE
>
> (I think that should be right based on your output of aplay -L)
>
>
> and there do an
>
>
> ls
>
>
> you should see a file called stream0. type
>
> cat stream0
>
>
> and send what you get back to the list.
>
>
>
>
> --
> Chris Hermansen · clhermansen "at" gmail "dot" com
>
> C'est ma façon de parler.
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