# Enable audio
This section shows how to configure hardware for
microphone and speaker connections and gives steps to verify basic audio
use cases.
Tab QCS6490
Tab IQ-9075
Tab IQ-8275
- *class* tabincludedirective
-
Setup flow
**Prerequisites**
- Set up your infrastructure as described in the [Qualcomm Linux Build
Guide](https://docs.qualcomm.com/doc/80-70023-254/topic/introduction.html)
- Flash the latest software release to the development board.
- Set up an SSH connection:
1. Enable SSH in Permissive mode. For instructions, see
[Use SSH](https://docs.qualcomm.com/doc/80-70023-254/topic/how_to.html#use-ssh).
2. Connect to the device by running the following command:
ssh root@
Copy to clipboard
For example, if the IP address of the device is 10.92.160.222, run
the following command:
ssh root@10.92.160.222
Copy to clipboard
**Set up audio hardware**
1. To activate the digital microphone interface (DMIC) on the board, use
DIP 2. Switch PIN 2 to the ON position.
2. Connect the speaker to the board as follows.
- *class* tabincludedirective
-
Setup flow
**Prerequisites**
- Set up your infrastructure as described in the [Qualcomm Linux Build
Guide](https://docs.qualcomm.com/doc/80-70023-254/topic/introduction.html)
- Flash the latest software release to the development board.
- Set up an SSH connection:
1. Enable SSH in Permissive mode. For instructions, see
[Use SSH](https://docs.qualcomm.com/doc/80-70023-254/topic/how_to.html#use-ssh)
2. Connect to the device by running the following command:
ssh root@
Copy to clipboard
For example, if the IP address of the device is 10.92.160.222, run
the following command:
ssh root@10.92.160.222
Copy to clipboard
**Set up audio hardware**
Connect the speaker to the board as follows.
Note
EVT boards need hardware rework for audio functions to work.
- *class* tabincludedirective
-
Setup flow
**Prerequisites**
- Set up your infrastructure as described in the [Qualcomm Linux Build
Guide](https://docs.qualcomm.com/doc/80-70023-254/topic/introduction.html)
- Flash the latest software release to the development board.
- Set up an SSH connection.
1. Enable SSH in Permissive mode. For instructions, see
[Use SSH](https://docs.qualcomm.com/doc/80-70023-254/topic/how_to.html#use-ssh)
2. Connect to the device by running the following command:
ssh root@
Copy to clipboard
For example, if the IP address of the device is 10.92.160.222, run
the following command:
ssh root@10.92.160.222
Copy to clipboard
**Set up audio hardware**
Connect the speaker to the board as follows.
## Enable audio with GStreamer
To decode audio using GStreamer apps, see the following.
- [Audio decode
example](https://docs.qualcomm.com/doc/80-70023-50/topic/gst-audio-decode-sample.html)
To encode audio using GStreamer apps, use the following instructions.
- Set the default input device for PipeWire.
Use the `wpctl status` command to list available nodes. Run `wpctl set-default` to set the source node to the handset mic.
wpctl status
Copy to clipboard
wpctl set-default
Copy to clipboard
- [Audio encode
example](https://docs.qualcomm.com/doc/80-70023-50/topic/gst-audio-encode-example-without-flac.html)
Note
To check the GStreamer app for different chipsets, see [Source information for multimedia sample applications](https://docs.qualcomm.com/doc/80-70023-50/topic/example-applications.html#multimedia-sample-applications).
GStreamer is an open source multimedia framework. Qualcomm provides
GStreamer plug-ins as part of the Qualcomm IM SDK.
### GStreamer plug-ins
- GStreamer plug-ins for audio decoder and encoder are part of Qualcomm IM SDK.
Download the entire Qualcomm IM SDK to use
[pulsesrc](https://docs.qualcomm.com/doc/80-70023-50/topic/pulsesrc.html)
and
[pulsesink](https://docs.qualcomm.com/doc/80-70023-50/topic/pulsesink.html).
- The [Qualcomm IM SDK Quick Start
Guide](https://docs.qualcomm.com/doc/80-70023-51/topic/introduction.html)
describes how to download and build the Qualcomm IM SDK.
### GStreamer sample apps
[Sample GStreamer apps for
audio](https://docs.qualcomm.com/doc/80-70023-50/topic/audio-sample-applications.html)
use cases are part of the Qualcomm IM SDK. Before running sample apps, meet
these [prerequisites](https://docs.qualcomm.com/doc/80-70023-50/topic/mm_sample_apps_prerequisites.html).
Run audio use cases with either command line or the GST app.
#### Play and record audio with the Gstreamer app
Use the reference GST commands mentioned in [audio playback/capture](https://docs.qualcomm.com/doc/80-70023-50/topic/audio-use-cases.html).
## Enable audio with PipeWire
PipeWire is a graph-based processing framework that handles multimedia data.
Find the source code for PipeWire at `build-qcom-wayland/workspace/sources/pipewire`.
For more information, see the [PipeWire open source documentation](https://docs.pipewire.org/page_api.html) for detailed APIs available.
Note
PipeWire supports playback and record with .wav files only.
### PipeWire record
>
>
> Tab QCS6490
> Tab IQ-9075
> Tab IQ-8275
>
> - *class* tabincludedirective
>
> - 1. Set up PipeWire recording:
>
>
> Use the `wpctl status` command to list available nodes. Run `wpctl set-default` to set
> the source node to the handset mic.
>
>
> wpctl status
> Copy to clipboard
>
>
> wpctl set-default
> Copy to clipboard
>
>
> pw-record --rate=48000 --format=s16 --channels=2 /opt/test.wav -v
> Copy to clipboard
>
>
> The command shell should resemble the following:
>
> 
> 2. Select Ctrl + C to stop the recording.
>
>
> Supported formats are s16le, s24le, s32le, s24-32le, rate can be 8000, 16000, 22050, 24000, 32000, 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000, 705600, and 768000, and channels can range from 1 to a maximum of 8.
>
> - *class* tabincludedirective
>
> - 1. Set up PipeWire recording:
>
>
> Use the `wpctl status` command to list available nodes. Run `wpctl set-default` to set
> the source node to the handset mic.
>
>
> wpctl status
> Copy to clipboard
>
>
> wpctl set-default
> Copy to clipboard
>
>
> pw-record --rate=48000 --format=s16 --channels=2 /opt/test.wav -v
> Copy to clipboard
>
>
> The command shell should resemble the following:
>
> 
> 2. Select Ctrl + C to stop the recording.
>
>
> Supported formats are s16le, s24le, s32le, s24-32le, rate can be 8000, 16000, 22050, 24000, 32000, 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000, 705600, and 768000, and channels can range from 1 to a maximum of 8.
>
> - *class* tabincludedirective
>
> - 1. Set up PipeWire recording:
>
>
> Use the `wpctl status` command to list available nodes. Run `wpctl set-default` to set
> the source node to the handset mic.
>
>
> wpctl status
> Copy to clipboard
>
>
> wpctl set-default
> Copy to clipboard
>
>
> pw-record --rate=48000 --format=s16 --channels=2 /opt/test.wav -v
> Copy to clipboard
>
>
> The command shell should resemble the following:
>
> 
> 2. Select Ctrl + C to stop the recording.
>
>
> Supported formats are s16le, s24le, s32le, s24-32le, rate can be 8000, 16000, 22050, 24000, 32000, 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000, 705600, and 768000, and channels can range from 1 to a maximum of 8.
### Volume settings for recording
>
>
> Tab QCS6490
> Tab IQ-9075
> Tab IQ-8275
>
> - *class* tabincludedirective
>
> - 1. Start audio capture using the `pw-record` utility.
> 2. Open a new command prompt in parallel. Open `ssh root@ip-addr` and
> run the following command to set the volume level:
>
>
> wpctl set-volume @DEFAULT_AUDIO_SOURCE@ 0.8
> Copy to clipboard
>
>
> In the above command, a value of 0.8 represents 80% volume. Adjust this value according to the desired volume level.
>
> - *class* tabincludedirective
>
> - 1. Start audio capture using the `pw-record` utility.
> 2. Open a new command prompt in parallel. Open `ssh root@ip-addr` and
> run the following command to set the volume level:
>
>
> wpctl set-volume @DEFAULT_AUDIO_SOURCE@ 0.8
> Copy to clipboard
>
>
> In the above command, a value of 0.8 represents 80% volume. Adjust this value according to the desired volume level.
>
> - *class* tabincludedirective
>
> - 1. Start audio capture using the `pw-record` utility.
> 2. Open a new command prompt in parallel. Open `ssh root@ip-addr` and
> run the following command to set the volume level:
>
>
> wpctl set-volume @DEFAULT_AUDIO_SOURCE@ 0.8
> Copy to clipboard
>
>
> In the above command, a value of 0.8 represents 80% volume. Adjust this value according to the desired volume level.
### PipeWire playback
>
>
> Tab QCS6490
> Tab IQ-9075
> Tab IQ-8275
>
> - *class* tabincludedirective
>
> - 1. Push the .wav audio file to the device for playback:
>
>
> scp test.wav root@[ip-addr]:/opt/
> Copy to clipboard
> 2. After pushing the test.wav file, enter the device shell using
> `ssh root@ip-addr`.
> 3. Set the default sink mode for playback using the below command and choose between two sink modes: one for low latency (LL) and another for deep buffer (DB).
>
>
> wpctl status
> Copy to clipboard
>
>
> wpctl set-default
> Copy to clipboard
> 4. Use the following command to start playback:
>
>
> pw-play /opt/test.wav -v
> Copy to clipboard
>
>
> The command shell should resemble the following:
>
> 
>
> - *class* tabincludedirective
>
> - 1. Push the .wav audio file to the device for playback:
>
>
> scp test.wav root@[ip-addr]:/opt/
> Copy to clipboard
> 2. After pushing the test.wav file, enter the device shell using
> `ssh root@ip-addr`.
> 3. Set the default sink mode for playback using the below command and choose between two sink modes: one for low latency (LL) and another for deep buffer (DB).
>
>
> wpctl status
> Copy to clipboard
>
>
> wpctl set-default
> Copy to clipboard
> 4. Use the following command to start playback:
>
>
> pw-play /opt/test.wav -v
> Copy to clipboard
>
>
> The command shell should resemble the following:
>
> 
>
> - *class* tabincludedirective
>
> - 1. Push the .wav audio file to the device for playback:
>
>
> scp test.wav root@[ip-addr]:/opt/
> Copy to clipboard
> 2. After pushing the test.wav file, enter the device shell using
> `ssh root@ip-addr`.
> 3. Set the default sink mode for playback using the below command and choose between two sink modes: one for low latency (LL) and another for deep buffer (DB).
>
>
> wpctl status
> Copy to clipboard
>
>
> wpctl set-default
> Copy to clipboard
> 4. Use the following command to start playback:
>
>
> pw-play /opt/test.wav -v
> Copy to clipboard
>
>
> The command shell should resemble the following:
>
> 
### Volume settings for playback
>
>
> Tab QCS6490
> Tab IQ-9075
> Tab IQ-8275
>
> - *class* tabincludedirective
>
> - 1. Start audio playback on the speakers using the `pw-play` utility.
> 2. Open a new command prompt in parallel. Open `ssh root@ip-addr` and
> run the following commands to set the volume level:
>
>
> wpctl set-volume @DEFAULT_AUDIO_SINK@ 0.8
> Copy to clipboard
>
>
> In the above command, a value of 0.8 represents 80% volume. Adjust this value according to the desired volume level.
>
> - *class* tabincludedirective
>
> - 1. Start audio playback on the speakers using the `pw-play` utility.
> 2. Open a new command prompt in parallel. Open `ssh root@ip-addr` and
> run the following commands to set the volume level:
>
>
> wpctl set-volume @DEFAULT_AUDIO_SINK@ 0.8
> Copy to clipboard
>
>
> In the above command, a value of 0.8 represents 80% volume. Adjust this value according to the desired volume level.
>
> - *class* tabincludedirective
>
> - 1. Start audio playback on the speakers using the `pw-play` utility.
> 2. Open a new command prompt in parallel. Open `ssh root@ip-addr` and
> run the following commands to set the volume level:
>
>
> wpctl set-volume @DEFAULT_AUDIO_SINK@ 0.8
> Copy to clipboard
>
>
> In the above command, a value of 0.8 represents 80% volume. Adjust this value according to the desired volume level.
Last Published: Jan 07, 2026
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