content/browser/speech/endpointer/energy_endpointer_params.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_SPEECH_ENDPOINTER_ENERGY_ENDPOINTER_PARAMS_H_
   6 #define CONTENT_BROWSER_SPEECH_ENDPOINTER_ENERGY_ENDPOINTER_PARAMS_H_
   7
   8 #include "base/basictypes.h"
   9 #include "content/common/content_export.h"
  10
  11 namespace content {
  12
  13 // Input parameters for the EnergyEndpointer class.
  14 class CONTENT_EXPORT EnergyEndpointerParams {
  15  public:
  16   EnergyEndpointerParams();
  17
  18   void SetDefaults();
  19
  20   void operator=(const EnergyEndpointerParams& source);
  21
  22   // Accessors and mutators
  23   float frame_period() const { return frame_period_; }
  24   void set_frame_period(float frame_period) {
  25     frame_period_ = frame_period;
  26   }
  27
  28   float frame_duration() const { return frame_duration_; }
  29   void set_frame_duration(float frame_duration) {
  30     frame_duration_ = frame_duration;
  31   }
  32
  33   float endpoint_margin() const { return endpoint_margin_; }
  34   void set_endpoint_margin(float endpoint_margin) {
  35     endpoint_margin_ = endpoint_margin;
  36   }
  37
  38   float onset_window() const { return onset_window_; }
  39   void set_onset_window(float onset_window) { onset_window_ = onset_window; }
  40
  41   float speech_on_window() const { return speech_on_window_; }
  42   void set_speech_on_window(float speech_on_window) {
  43     speech_on_window_ = speech_on_window;
  44   }
  45
  46   float offset_window() const { return offset_window_; }
  47   void set_offset_window(float offset_window) {
  48     offset_window_ = offset_window;
  49   }
  50
  51   float onset_detect_dur() const { return onset_detect_dur_; }
  52   void set_onset_detect_dur(float onset_detect_dur) {
  53     onset_detect_dur_ = onset_detect_dur;
  54   }
  55
  56   float onset_confirm_dur() const { return onset_confirm_dur_; }
  57   void set_onset_confirm_dur(float onset_confirm_dur) {
  58     onset_confirm_dur_ = onset_confirm_dur;
  59   }
  60
  61   float on_maintain_dur() const { return on_maintain_dur_; }
  62   void set_on_maintain_dur(float on_maintain_dur) {
  63     on_maintain_dur_ = on_maintain_dur;
  64   }
  65
  66   float offset_confirm_dur() const { return offset_confirm_dur_; }
  67   void set_offset_confirm_dur(float offset_confirm_dur) {
  68     offset_confirm_dur_ = offset_confirm_dur;
  69   }
  70
  71   float decision_threshold() const { return decision_threshold_; }
  72   void set_decision_threshold(float decision_threshold) {
  73     decision_threshold_ = decision_threshold;
  74   }
  75
  76   float min_decision_threshold() const { return min_decision_threshold_; }
  77   void set_min_decision_threshold(float min_decision_threshold) {
  78     min_decision_threshold_ = min_decision_threshold;
  79   }
  80
  81   float fast_update_dur() const { return fast_update_dur_; }
  82   void set_fast_update_dur(float fast_update_dur) {
  83     fast_update_dur_ = fast_update_dur;
  84   }
  85
  86   float sample_rate() const { return sample_rate_; }
  87   void set_sample_rate(float sample_rate) { sample_rate_ = sample_rate; }
  88
  89   float min_fundamental_frequency() const { return min_fundamental_frequency_; }
  90   void set_min_fundamental_frequency(float min_fundamental_frequency) {
  91     min_fundamental_frequency_ = min_fundamental_frequency;
  92   }
  93
  94   float max_fundamental_frequency() const { return max_fundamental_frequency_; }
  95   void set_max_fundamental_frequency(float max_fundamental_frequency) {
  96     max_fundamental_frequency_ = max_fundamental_frequency;
  97   }
  98
  99   float contamination_rejection_period() const {
 100     return contamination_rejection_period_;
 101   }
 102   void set_contamination_rejection_period(
 103       float contamination_rejection_period) {
 104     contamination_rejection_period_ = contamination_rejection_period;
 105   }
 106
 107  private:
 108   float frame_period_;  // Frame period
 109   float frame_duration_;  // Window size
 110   float onset_window_;  // Interval scanned for onset activity
 111   float speech_on_window_;  // Inverval scanned for ongoing speech
 112   float offset_window_;  // Interval scanned for offset evidence
 113   float offset_confirm_dur_;  // Silence duration required to confirm offset
 114   float decision_threshold_;  // Initial rms detection threshold
 115   float min_decision_threshold_;  // Minimum rms detection threshold
 116   float fast_update_dur_;  // Period for initial estimation of levels.
 117   float sample_rate_;  // Expected sample rate.
 118
 119   // Time to add on either side of endpoint threshold crossings
 120   float endpoint_margin_;
 121   // Total dur within onset_window required to enter ONSET state
 122   float onset_detect_dur_;
 123   // Total on time within onset_window required to enter SPEECH_ON state
 124   float onset_confirm_dur_;
 125   // Minimum dur in SPEECH_ON state required to maintain ON state
 126   float on_maintain_dur_;
 127   // Minimum fundamental frequency for autocorrelation.
 128   float min_fundamental_frequency_;
 129   // Maximum fundamental frequency for autocorrelation.
 130   float max_fundamental_frequency_;
 131   // Period after start of user input that above threshold values are ignored.
 132   // This is to reject audio feedback contamination.
 133   float contamination_rejection_period_;
 134 };
 135
 136 }  //  namespace content
 137
 138 #endif  // CONTENT_BROWSER_SPEECH_ENDPOINTER_ENERGY_ENDPOINTER_PARAMS_H_