hp.telephony.media
Interface EchoCancellerConstants

All Known Subinterfaces:

EchoCanceller, Recorder

All Known Implementing Classes:

AsyncMediaGroup

public interface EchoCancellerConstants

Defines the symbol constants used by the Echo canceller resource

Field Summary

static Symbol	p_AcousticEcho Acoustic Echo mode is active if value is Boolean.TRUE This control is supported by the hardware Echo Canceller only Valid values: Boolean.TRUE and Boolean.FALSE Default value = Boolean.FALSE.
static Symbol	p_AlcInEnable Automatic Level Control on input stream is active if value is Boolean.TRUE This control is supported by the hardware Echo Canceller only Valid values: Boolean.TRUE and Boolean.FALSE Default value = Boolean.FALSE.
static Symbol	p_AlcInGain Automatic Level Control Gain on input stream This control is supported by the hardware Echo Canceller only Valid values: any Integer value from -24 to +24 Default value = 0.
static Symbol	p_AlcOutEnable Automatic Level Control on output stream is active if value is Boolean.TRUE This control is supported by the hardware Echo Canceller only Valid values: Boolean.TRUE and Boolean.FALSE Default value = Boolean.FALSE.
static Symbol	p_AlcOutGain Automatic Level Control Gain on outinput stream This control is supported by the hardware Echo Canceller only Valid values: any Integer value from -24 to +24 Default value = 0.
static Symbol	p_Bypass Bypass mode is active if value is Boolean.TRUE This control is supported by the hardware Echo Canceller only Valid values: Boolean.TRUE and Boolean.FALSE Default value = Boolean.FALSE.
static Symbol	p_EchoThreshold Deprecated. after 2.3 SoftDSP 1
static Symbol	p_MaxDelaySearch Deprecated.
static Symbol	p_Mu Deprecated. after 2.3 SoftDSP 1
static Symbol	p_NlpControl Non Linear Processor mode is active if value is Boolean.TRUE This control is supported by the hardware Echo Canceller only Valid values: Boolean.TRUE and Boolean.FALSE Default value = Boolean.TRUE.

Field Detail

p_Mu

public static final Symbol p_Mu

Deprecated. after 2.3 SoftDSP 1

Mu is the adaptation step. Play directly on the echo attenuation level.

Valid values: any Double value from 0 to 1.
Default value = 4e-9.

p_MaxDelaySearch

public static final Symbol p_MaxDelaySearch

Deprecated.

Max delay value is the maximum pure dealy searched by the echo canceller, in number of sample.

Valid values: any Integer value from 0 to 8000 (1 second).
Default value = 2048. after 2.3 SoftDSP 1

p_EchoThreshold

public static final Symbol p_EchoThreshold

Deprecated. after 2.3 SoftDSP 1

Echo threshold value is the minimum power needed by the echo to activate the cancellation. Below this value, the echo canceller will disable itself.

Valid values: any Double value from 0 to 1.
Default value = (2000000 / 128 / 32767 / 32767).

p_NlpControl

public static final Symbol p_NlpControl

Non Linear Processor mode is active if value is Boolean.TRUE This control is supported by the hardware Echo Canceller only

Valid values: Boolean.TRUE and Boolean.FALSE
Default value = Boolean.TRUE.

p_AcousticEcho

public static final Symbol p_AcousticEcho

Acoustic Echo mode is active if value is Boolean.TRUE This control is supported by the hardware Echo Canceller only

Valid values: Boolean.TRUE and Boolean.FALSE
Default value = Boolean.FALSE.

p_Bypass

public static final Symbol p_Bypass

Bypass mode is active if value is Boolean.TRUE This control is supported by the hardware Echo Canceller only

Valid values: Boolean.TRUE and Boolean.FALSE
Default value = Boolean.FALSE.

p_AlcInEnable

public static final Symbol p_AlcInEnable

Automatic Level Control on input stream is active if value is Boolean.TRUE This control is supported by the hardware Echo Canceller only

Valid values: Boolean.TRUE and Boolean.FALSE
Default value = Boolean.FALSE.

p_AlcInGain

public static final Symbol p_AlcInGain

Automatic Level Control Gain on input stream This control is supported by the hardware Echo Canceller only

Valid values: any Integer value from -24 to +24
Default value = 0.

p_AlcOutEnable

public static final Symbol p_AlcOutEnable

Automatic Level Control on output stream is active if value is Boolean.TRUE This control is supported by the hardware Echo Canceller only

Valid values: Boolean.TRUE and Boolean.FALSE
Default value = Boolean.FALSE.

p_AlcOutGain

public static final Symbol p_AlcOutGain

Automatic Level Control Gain on outinput stream This control is supported by the hardware Echo Canceller only

Valid values: any Integer value from -24 to +24
Default value = 0.