1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/media/webspeech/recognition/energy_endpointer_params.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,159 @@
1.4 +// Copyright (c) 2013 The Chromium Authors. All rights reserved.
1.5 +//
1.6 +// Redistribution and use in source and binary forms, with or without
1.7 +// modification, are permitted provided that the following conditions are
1.8 +// met:
1.9 +//
1.10 +// * Redistributions of source code must retain the above copyright
1.11 +// notice, this list of conditions and the following disclaimer.
1.12 +// * Redistributions in binary form must reproduce the above
1.13 +// copyright notice, this list of conditions and the following disclaimer
1.14 +// in the documentation and/or other materials provided with the
1.15 +// distribution.
1.16 +// * Neither the name of Google Inc. nor the names of its
1.17 +// contributors may be used to endorse or promote products derived from
1.18 +// this software without specific prior written permission.
1.19 +//
1.20 +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1.21 +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1.22 +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
1.23 +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
1.24 +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
1.25 +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
1.26 +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
1.27 +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
1.28 +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
1.29 +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
1.30 +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.31 +
1.32 +#ifndef CONTENT_BROWSER_SPEECH_ENDPOINTER_ENERGY_ENDPOINTER_PARAMS_H_
1.33 +#define CONTENT_BROWSER_SPEECH_ENDPOINTER_ENERGY_ENDPOINTER_PARAMS_H_
1.34 +
1.35 +namespace mozilla {
1.36 +
1.37 +// Input parameters for the EnergyEndpointer class.
1.38 +class EnergyEndpointerParams {
1.39 + public:
1.40 + EnergyEndpointerParams();
1.41 +
1.42 + void SetDefaults();
1.43 +
1.44 + void operator=(const EnergyEndpointerParams& source);
1.45 +
1.46 + // Accessors and mutators
1.47 + float frame_period() const { return frame_period_; }
1.48 + void set_frame_period(float frame_period) {
1.49 + frame_period_ = frame_period;
1.50 + }
1.51 +
1.52 + float frame_duration() const { return frame_duration_; }
1.53 + void set_frame_duration(float frame_duration) {
1.54 + frame_duration_ = frame_duration;
1.55 + }
1.56 +
1.57 + float endpoint_margin() const { return endpoint_margin_; }
1.58 + void set_endpoint_margin(float endpoint_margin) {
1.59 + endpoint_margin_ = endpoint_margin;
1.60 + }
1.61 +
1.62 + float onset_window() const { return onset_window_; }
1.63 + void set_onset_window(float onset_window) { onset_window_ = onset_window; }
1.64 +
1.65 + float speech_on_window() const { return speech_on_window_; }
1.66 + void set_speech_on_window(float speech_on_window) {
1.67 + speech_on_window_ = speech_on_window;
1.68 + }
1.69 +
1.70 + float offset_window() const { return offset_window_; }
1.71 + void set_offset_window(float offset_window) {
1.72 + offset_window_ = offset_window;
1.73 + }
1.74 +
1.75 + float onset_detect_dur() const { return onset_detect_dur_; }
1.76 + void set_onset_detect_dur(float onset_detect_dur) {
1.77 + onset_detect_dur_ = onset_detect_dur;
1.78 + }
1.79 +
1.80 + float onset_confirm_dur() const { return onset_confirm_dur_; }
1.81 + void set_onset_confirm_dur(float onset_confirm_dur) {
1.82 + onset_confirm_dur_ = onset_confirm_dur;
1.83 + }
1.84 +
1.85 + float on_maintain_dur() const { return on_maintain_dur_; }
1.86 + void set_on_maintain_dur(float on_maintain_dur) {
1.87 + on_maintain_dur_ = on_maintain_dur;
1.88 + }
1.89 +
1.90 + float offset_confirm_dur() const { return offset_confirm_dur_; }
1.91 + void set_offset_confirm_dur(float offset_confirm_dur) {
1.92 + offset_confirm_dur_ = offset_confirm_dur;
1.93 + }
1.94 +
1.95 + float decision_threshold() const { return decision_threshold_; }
1.96 + void set_decision_threshold(float decision_threshold) {
1.97 + decision_threshold_ = decision_threshold;
1.98 + }
1.99 +
1.100 + float min_decision_threshold() const { return min_decision_threshold_; }
1.101 + void set_min_decision_threshold(float min_decision_threshold) {
1.102 + min_decision_threshold_ = min_decision_threshold;
1.103 + }
1.104 +
1.105 + float fast_update_dur() const { return fast_update_dur_; }
1.106 + void set_fast_update_dur(float fast_update_dur) {
1.107 + fast_update_dur_ = fast_update_dur;
1.108 + }
1.109 +
1.110 + float sample_rate() const { return sample_rate_; }
1.111 + void set_sample_rate(float sample_rate) { sample_rate_ = sample_rate; }
1.112 +
1.113 + float min_fundamental_frequency() const { return min_fundamental_frequency_; }
1.114 + void set_min_fundamental_frequency(float min_fundamental_frequency) {
1.115 + min_fundamental_frequency_ = min_fundamental_frequency;
1.116 + }
1.117 +
1.118 + float max_fundamental_frequency() const { return max_fundamental_frequency_; }
1.119 + void set_max_fundamental_frequency(float max_fundamental_frequency) {
1.120 + max_fundamental_frequency_ = max_fundamental_frequency;
1.121 + }
1.122 +
1.123 + float contamination_rejection_period() const {
1.124 + return contamination_rejection_period_;
1.125 + }
1.126 + void set_contamination_rejection_period(
1.127 + float contamination_rejection_period) {
1.128 + contamination_rejection_period_ = contamination_rejection_period;
1.129 + }
1.130 +
1.131 + private:
1.132 + float frame_period_; // Frame period
1.133 + float frame_duration_; // Window size
1.134 + float onset_window_; // Interval scanned for onset activity
1.135 + float speech_on_window_; // Inverval scanned for ongoing speech
1.136 + float offset_window_; // Interval scanned for offset evidence
1.137 + float offset_confirm_dur_; // Silence duration required to confirm offset
1.138 + float decision_threshold_; // Initial rms detection threshold
1.139 + float min_decision_threshold_; // Minimum rms detection threshold
1.140 + float fast_update_dur_; // Period for initial estimation of levels.
1.141 + float sample_rate_; // Expected sample rate.
1.142 +
1.143 + // Time to add on either side of endpoint threshold crossings
1.144 + float endpoint_margin_;
1.145 + // Total dur within onset_window required to enter ONSET state
1.146 + float onset_detect_dur_;
1.147 + // Total on time within onset_window required to enter SPEECH_ON state
1.148 + float onset_confirm_dur_;
1.149 + // Minimum dur in SPEECH_ON state required to maintain ON state
1.150 + float on_maintain_dur_;
1.151 + // Minimum fundamental frequency for autocorrelation.
1.152 + float min_fundamental_frequency_;
1.153 + // Maximum fundamental frequency for autocorrelation.
1.154 + float max_fundamental_frequency_;
1.155 + // Period after start of user input that above threshold values are ignored.
1.156 + // This is to reject audio feedback contamination.
1.157 + float contamination_rejection_period_;
1.158 +};
1.159 +
1.160 +} // namespace mozilla
1.161 +
1.162 +#endif // CONTENT_BROWSER_SPEECH_ENDPOINTER_ENERGY_ENDPOINTER_PARAMS_H_
