A Ruby library for consuming the AT&T Speech API for speech to text. API details may be found here.
gem install att_speech
require 'att_speech'
att_speech = ATTSpeech.new({ :api_key => ENV['ATT_SPEECH_KEY'],
:secret_key => ENV['ATT_SPEECH_SECRET'],
:scope => 'SPEECH' })
# Read the audio file contents
file_contents = File.read(File.expand_path(File.dirname(File.dirname(__FILE__))) + "/bostonSeltics.wav")
# Blocking operation
p att_speech.speech_to_text(file_contents, type='audio/wav')
# Non-blocking operation with a future, if you have a longer file that requires more processing time
sleep 2
future = att_speech.future(:speech_to_text, file_contents, type='audio/wav')
p future.value
# Non-blocking operation that will call a block when the transcrption is returned
# Note: Remember, this is a concurrent operation so don't pass self and avoid mutable objects in the block
# from the calling context, better to have discreet actions contained in the block, such as inserting in a
# datastore
sleep 2
supervisor = ATTSpeech.supervise({ :api_key => ENV['ATT_SPEECH_KEY'],
:secret_key => ENV['ATT_SPEECH_SECRET'],
:scope => 'SPEECH' })
supervisor.future.speech_to_text(file_contents)
# do other stuff here
sleep 5
transcription = supervisor.value # returns immediately if the operation is complete, otherwise blocks until the value is ready
def write_wav_file(audio_bytes)
file_name = "ret_audio-#{Time.now.strftime('%Y%m%d-%H%M%S')}.wav"
full_file_name = File.expand_path(File.join(File.dirname(File.dirname(__FILE__)), 'examples', file_name))
audio_file = File.open(full_file_name, "w")
audio_file << audio_bytes
audio_file.close
end
att_text = ATTSpeech.new({ :api_key => ENV['ATT_SPEECH_KEY'],
:secret_key => ENV['ATT_SPEECH_SECRET'],
:scope => 'TTS' })
# Read the text file contents
tfp = File.expand_path(File.join(File.dirname(File.dirname(__FILE__)), 'examples', 'helloWorld.txt'))
txt_contents = File.read(tfp)
audio = att_text.text_to_speech(txt_contents)
write_wav_file(audio)
# Non-blocking operation with a future, if you have a longer file that requires more processing time
sleep 2
future = att_text.future(:text_to_speech, "This is a hello world.", type='text/plain')
write_wav_file(future.value)Copyright (c) 2013 Jason Goecke. Copyright (c) 2014 Ben Klang. See LICENSE.txt for further details.