Class: MorseCode::Sample

Inherits:
Object
  • Object
show all
Defined in:
lib/morse_code/sample.rb

Constant Summary collapse

DIT_LENGTH = 
60
DAH_LENGTH = 
3 * DIT_LENGTH
DIT_SPACE = 
DIT_LENGTH
CHAR_SPACE = 
3 * DIT_LENGTH
WORD_SPACE = 
7 * DIT_LENGTH

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(message, frequency = 600, sample_rate = 8000) ⇒ Sample

Returns a new instance of Sample.



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# File 'lib/morse_code/sample.rb', line 11

def initialize(message, frequency = 600, sample_rate = 8000)
  @message = message
  @frequency = frequency
  @sample_rate = sample_rate
end

Instance Attribute Details

#frequency ⇒ Object (readonly)

Returns the value of attribute frequency.



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# File 'lib/morse_code/sample.rb', line 9

def frequency
  @frequency
end

#message ⇒ Object (readonly)

Returns the value of attribute message.



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# File 'lib/morse_code/sample.rb', line 9

def message
  @message
end

#sample_rate ⇒ Object (readonly)

Returns the value of attribute sample_rate.



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# File 'lib/morse_code/sample.rb', line 9

def sample_rate
  @sample_rate
end

Instance Method Details

#pcm_samples ⇒ Object

8-bit unsigned PCM format



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# File 'lib/morse_code/sample.rb', line 18

def pcm_samples
  @pcm_samples ||= [].tap do |pcm_samples|
    samples.each { |sample| pcm_samples.push(128 + (127 * sample).round) }
  end
end