Class: AudioStream::Rate

Inherits:
Object
  • Object
show all
Defined in:
lib/audio_stream/rate.rb

Constant Summary collapse

SYNC_64 = 
sync(480 * 4 * 64)
SYNC_32 = 
sync(480 * 4 * 32)
SYNC_16 = 
sync(480 * 4 * 16)
SYNC_8 = 
sync(480 * 4 * 8)
SYNC_6 = 
sync(480 * 4 * 6)
SYNC_4 = 
sync(480 * 4 * 4)
SYNC_3 = 
sync(480 * 4 * 3)
SYNC_2 = 
sync(480 * 4 * 2)
SYNC_7_4 = 
sync(480 * 4 * 7 / 4)
SYNC_6_4 = 
sync(480 * 4 * 6 / 4)
SYNC_5_4 = 
sync(480 * 4 * 5 / 4)
SYNC_1 = 
sync(480 * 4 * 1)
SYNC_3_4 = 
sync(480 * 4 * 3 / 4)
SYNC_1_2 = 
sync(480 * 4 * 1 / 2)
SYNC_1_4D = 
sync(480 * 4 * 1 / 4 * 3 / 2)
SYNC_1_4 = 
sync(480 * 4 * 1 / 4)
SYNC_1_4T = 
sync(480 * 4 * 1 / 4 * 2 / 3)
SYNC_1_8D = 
sync(480 * 4 * 1 / 8 * 3 / 2)
SYNC_1_8 = 
sync(480 * 4 * 1 / 8)
SYNC_1_8T = 
sync(480 * 4 * 1 / 8 * 2 / 3)
SYNC_1_16D = 
sync(480 * 4 * 1 / 16 * 3 / 2)
SYNC_1_16 = 
sync(480 * 4 * 1 / 16)
SYNC_1_16T = 
sync(480 * 4 * 1 / 16 * 2 / 3)
SYNC_1_32D = 
sync(480 * 4 * 1 / 32 * 3 / 2)
SYNC_1_32 = 
sync(480 * 4 * 1 / 32)
SYNC_1_32T = 
sync(480 * 4 * 1 / 32 * 2 / 3)
SYNC_1_64D = 
sync(480 * 4 * 1 / 64 * 3 / 2)
SYNC_1_64 = 
sync(480 * 4 * 1 / 64)
SYNC_1_64T = 
sync(480 * 4 * 1 / 64 * 2 / 3)
SYNC_1_128D = 
sync(480 * 4 * 1 / 128 * 3 / 2)
SYNC_1_128 = 
sync(480 * 4 * 1 / 128)
SYNC_1_128T = 
sync(480 * 4 * 1 / 128 * 2 / 3)

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(sec: nil, sample: nil, freq: nil, sync: nil) ⇒ Rate

Returns a new instance of Rate.



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# File 'lib/audio_stream/rate.rb', line 3

def initialize(sec: nil, sample: nil, freq: nil, sync: nil)
  @sec = sec
  @sample = sample
  @freq = freq
  @sync = sync
end

Class Method Details

.freq(v) ⇒ Object 



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# File 'lib/audio_stream/rate.rb', line 99

def self.freq(v)
  if self===v
    v
  else
    new(freq: v)
  end
end

.msec(v) ⇒ Object 



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# File 'lib/audio_stream/rate.rb', line 83

def self.msec(v)
  if self===v
    v
  else
    new(sec: v*0.001)
  end
end

.sample(v) ⇒ Object 



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# File 'lib/audio_stream/rate.rb', line 91

def self.sample(v)
  if self===v
    v
  else
    new(sample: v)
  end
end

.sec(v) ⇒ Object 



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# File 'lib/audio_stream/rate.rb', line 75

def self.sec(v)
  if self===v
    v
  else
    new(sec: v)
  end
end

.sync(v) ⇒ Object 



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# File 'lib/audio_stream/rate.rb', line 107

def self.sync(v)
  if self===v
    v
  else
    new(sync: v)
  end
end

Instance Method Details

#*(other) ⇒ Object 



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# File 'lib/audio_stream/rate.rb', line 55

def *(other)
  other = other.to_f

  if @sample
    return self.class.new(sample: @sample * other)
  end

  if @sec
    return self.class.new(sec: @sec * other)
  end

  if @freq
    return self.class.new(freq: @freq / other)
  end

  if @sync
    return self.class.new(sync: @sync * other)
  end
end

#add(other, soundinfo) ⇒ Object 



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# File 'lib/audio_stream/rate.rb', line 50

def add(other, soundinfo)
  other = self.class.sec(other)
  self.class.new(sec: self.sec(soundinfo) + other.sec(soundinfo))
end

#frame(soundinfo) ⇒ Object 



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# File 'lib/audio_stream/rate.rb', line 15

def frame(soundinfo)
  sample(soundinfo).to_f / soundinfo.window_size
end

#frame_phase(soundinfo) ⇒ Object 



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# File 'lib/audio_stream/rate.rb', line 42

def frame_phase(soundinfo)
  sample_phase(soundinfo) * soundinfo.window_size
end

#freq(soundinfo) ⇒ Object 



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# File 'lib/audio_stream/rate.rb', line 37

def freq(soundinfo)
  return @freq if @freq
  soundinfo.samplerate.to_f / sample(soundinfo)
end

#sample(soundinfo) ⇒ Object 



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# File 'lib/audio_stream/rate.rb', line 19

def sample(soundinfo)
  if @sample
    return @sample
  end

  if @sec
    return @sec.to_f * soundinfo.samplerate
  end

  if @freq
    return soundinfo.samplerate.to_f / @freq
  end

  if @sync
    return @sync / 480.0 * soundinfo.sync_rate
  end
end

#sample_phase(soundinfo) ⇒ Object 



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# File 'lib/audio_stream/rate.rb', line 46

def sample_phase(soundinfo)
  2.0 * Math::PI / sample(soundinfo)
end

#sec(soundinfo) ⇒ Object 



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# File 'lib/audio_stream/rate.rb', line 10

def sec(soundinfo)
  return @sec if @sec
  sample(soundinfo).to_f / soundinfo.samplerate
end