projectoxford 0.3.0

Python module for using Project Oxford APIs

Python client library for Project Oxford APIs.

Microsoft Project Oxford is a collection of artificial intelligence tools made available as online services. This library provides easy use of the Project Oxford APIs from Python.

Currently only the speech recognition, synthesis and LUIS APIs are implemented.

If you were using the previous version of this library, which only provided the vision APIs, install projectoxford<=0.2 to continue to use that version.

Installation

To install, use pip:

pip install projectoxford

This library is in an early stage of development. We strongly recommend pinning all references to the specific version you are using.

Getting Started

To use text to speech or speech recognition, you’ll need to obtain a subscription key.

from projectoxford.speech import SpeechClient
sc = SpeechClient("YOUR-KEY-GOES-HERE", gender='Male', locale='en-US')

You can use sc.say_to_wav to create a wave file containing synthesized speech, or sc.say to immediately play the speech.

data = sc.say_to_wav("Hello. I have been written to a file.", filename="test.wav")
sc.say("I am being read out loud, right now.")

You can use sc.recognize to convert speech in a wave file into text, or without providing a file to record up to 30 seconds from the user’s default microphone.

If the response indicates that it does not have high confidence in the result, a LowConfidenceError is raised. args[0] on the error contains the best guess at the text. If no result can be determined at all, ValueError is raised.

The recognize_raw method returns the JSON response from the service, which contains more information than is available from recognize.

from projectoxford.speech import LowConfidenceError
text = sc.recognize('some_speech.wav')

try:
    text = sc.recognize()
except LowConfidenceError as err:
    text = err.args[0]

json_data = sc.recognize_raw()

Functions sc.print and sc.input can be used to override the builtin print and input functions to easily convert existing code.

print = sc.print
input = sc.input

print("Welcome to my application.")
name = input("What is your name?")

Audio playback and recording is performed by the projectoxford.audio module. Currently, only Windows is supported, and the user’s default device is always used.

By default, record waits for some sound to be heard, then records until one second of silence. Use the quiet_threshold argument to adjust sensitivity, and the get_quiet_threshold function can to obtain this value by recording a short period of silence.

The play function takes a filename or the raw contents of a wave file and plays the entire sound before returning.

from projectoxford.audio import play, record
wave_file_contents = record()
play(wave_file_contents)

# Record for 5 seconds
data = record(seconds=5, quiet_seconds=0, wait_for_sound=False)

Use help(record) to review other arguments.

Contributing

Over time we hope to add the full range of Project Oxford APIs to this library. Contributions are welcome.

Licence

This Project Oxford client library is distributed under the MIT license. See LICENSE for full details.