mirror of
https://github.com/signalwire/freeswitch.git
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8e189ed233
Now avmd detection is done in detector threads processing audio frames with different resolution and/or offsets. Detection decision is based on relative standard deviation which dynamically adjusts to the signal. Detection of amplitude, frequency and both simultaneously is enabled and corresponding setting added to the configuration. Frequency estimates are filtered with median filter. This commit also resolves: FS-9539 - Get estimates with different resolution FS-9513 - Use adjustable thresholds FS-9502 - Add detection mode setting FS-9501 - Enable three modes of detection FS-9407 - Add check of amplitude for NaN before appending to SMA buffer FS-9139 - Unit test framework
69 lines
3.3 KiB
XML
69 lines
3.3 KiB
XML
<configuration name="avmd.conf" description="AVMD config">
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<settings>
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<!-- Edit these settings to change default behaviour
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of each avmd session. Settings can be overwritten
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by values passed dynamically per each session -->
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<!-- Global settings -->
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<!-- define/undefine this to enable/disable logging of avmd
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intermediate computations to log -->
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<param name="debug" value="0"/>
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<!-- define/undef this to enable/disable verbose logging (and reporting to the console)
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of detection status and other diagnostics like parameters avmd session has been started with,
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change of configuration parameters, beep detection status after session ended
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(stop event is fired independently of this setting and beep status included there) -->
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<param name="report_status" value="1"/>
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<!-- define/undefine this to enable/disable faster computation
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of arcus cosine - table will be created mapping floats
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to integers and returning arc cos values given these integer
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indices into table -->
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<param name="fast_math" value="0"/>
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<!-- Global settings end -->
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<!-- Per call (session) settings. These settings can be overwritten
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with custom/different values per each avmd session -->
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<!-- define/undefine this to classify avmd beep detection as valid
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only when there is required number of consecutive elements
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in the SMA buffer without reset -->
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<param name="require_continuous_streak" value="1"/>
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<!-- required number of consecutive elements in the SMA buffer
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without reset. This parameter helps to avoid false beeps, bigger this value is
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smaller the probability of getting false detection -->
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<param name="sample_n_continuous_streak" value="5"/>
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<!-- define number of samples to skip starting from the beginning
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of the frame and/or after reset has happened. This serves the purpose of skipping first few
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estimations on each frame, as these estimations may be inaccurate. This parameter also helps
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to give more robust detections when it's value is increased (up to scertain limit of about 60). -->
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<param name="sample_n_to_skip" value="0"/>
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<param name="require_continuous_streak_amp" value="1"/>
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<param name="sample_n_continuous_streak_amp" value="5"/>
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<!-- define/undefine this to enable/disable simplified estimation
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of frequency based on approximation of sin(x) with (x)
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in the range x=[0,PI/2] -->
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<param name="simplified_estimation" value="1"/>
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<!-- define/undefine to enable/disable avmd on internal channel -->
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<param name="inbound_channel" value="0"/>
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<!-- define/undefine to enable/disable avmd on external channel -->
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<param name="outbound_channel" value="1"/>
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<!-- determines the mode of detection, default is both amplitude and frequency -->
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<param name="detection_mode" value="2"/>
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<!-- Per call settings end -->
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</settings>
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</configuration>
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