AUDIOCE(4)

NAME
audioce - SPARC64 EBus CS4231 audio device

SYNOPSIS
audioce* at ebus?
audio* at audioce?

DESCRIPTION
The audioce device uses the Crystal Semiconductor CS4231A Parallel Interface, Multimedia Audio Codec chip to implement the audio device interface described in audio(4). This device is found onboard on some PCI/EBus based sparc64 models.

The audioce has a maximum precision of 16 bits and has both stereo and monoaural outputs.

MIXER INTERFACE
The mixer(4) interface for audioce provides the following controls:

outputs.dac
    Specifies the attenuation of DAC output. A value of ‘255’ represents 0 dB attenuation.

outputs.dac.mute
    Specifies whether DAC output is muted.

outputs.output
    Specifies the set of enabled output ports. The output ports are: ‘line’, the line output jack, ‘hp’, the low impedance headphone jack, and ‘spkr’, the internal speaker. Note: Not all systems support disabling the headphone and line output ports.

inputs.cd
    Specifies the gain applied to CD audio input. A value of ‘191’ represents 0 dB.

inputs.cd.mute
    Specifies whether CD audio input is muted.

inputs.line
    Specifies the gain applied to line input. A value of ‘191’ represents 0 dB.

inputs.line.mute
    Specifies whether line input is muted.

outputs.monitor
    Specifies the attenuation of ADC to DAC output. A value of ‘255’ represents 0 dB.

outputs.monitor.mute
    Specifies whether ADC to DAC output is muted.

record.volume
    Specifies ADC input gain. A value of ‘0’ represents 0 dB.

record.source
    Specifies the active input port for the ADC. The following are valid ADC input ports: ‘line’, line input, ‘cd’, CD input, ‘mic’, microphone input, and ‘mixerout’, post-mixer output as heard on the output ports.

record.mic_preamp
    Specifies whether an additional +20 dB gain is applied to the ADC's microphone input.

SEE ALSO
ioctl(2), audio(4), ebus(4), intro(4)

HISTORY
OpenBSD support for audioce first appeared in OpenBSD 3.0.