Metadata-Version: 2.1
Name: pvcobrademo
Version: 1.1.3
Summary: Cobra voice activity detection (VAD) engine demos.
Home-page: https://github.com/Picovoice/cobra
Author: Picovoice
Author-email: hello@picovoice.ai
License: UNKNOWN
Description: # Cobra Voice Activity Detection engine
        
        Made in Vancouver, Canada by [Picovoice](https://picovoice.ai)
        
        This package contains demos and commandline utilities for processing real-time audio (i.e. microphone) and audio files
        using Cobra voice activity detection engine.
        
        ## Cobra
        
        Cobra is a highly accurate and lightweight voice activity detection (VAD) engine.
        
        ## Compatibility
        
        - Python 3.5+
        - Runs on Linux (x86_64), Mac (x86_64), Windows (x86_64), Raspberry Pi (all variants), NVIDIA Jetson (Nano), and BeagleBone.
        
        ## AccessKey
        
        Cobra requires a valid Picovoice `AccessKey` at initialization. `AccessKey` acts as your credentials when using Cobra SDKs.
        You can get your `AccessKey` for free. Make sure to keep your `AccessKey` secret.
        Signup or Login to [Picovoice Console](https://console.picovoice.ai/) to get your `AccessKey`.
        
        ## Installation
        
        
        ```console
        sudo pip3 install pvcobrademo
        ```
        
        ## Usage
        
        ### Microphone Demo
        
        The Microphone demo opens an audio stream from a microphone and detects voice activities. The following opens the default microphone:
        
        ```console
        cobra_demo_mic --access_key {AccessKey}
        ```
        
        where `{AccessKey}` is an AccessKey which should be obtained from [Picovoice Console](https://console.picovoice.ai/). It is possible that the default audio input device recognized by `pvrecorder` is not the one being used. There are a couple of debugging facilities baked into the demo application to solve this. First, type the following into the console:
        
        ```console
        cobra_demo_mic --show_audio_devices
        ```
        
        It provides information about various audio input devices on the box. On a Linux box, this is the console output:
        
        ```
        'index': '0', 'name': 'HDA Intel PCH: ALC892 Analog (hw:0,0)', 'defaultSampleRate': '44100.0', 'maxInputChannels': '2'
        'index': '1', 'name': 'HDA Intel PCH: ALC892 Alt Analog (hw:0,2)', 'defaultSampleRate': '44100.0', 'maxInputChannels': '2'
        'index': '2', 'name': 'HDA NVidia: HDMI 0 (hw:1,3)', 'defaultSampleRate': '44100.0', 'maxInputChannels': '0'
        'index': '3', 'name': 'HDA NVidia: HDMI 1 (hw:1,7)', 'defaultSampleRate': '44100.0', 'maxInputChannels': '0'
        'index': '4', 'name': 'HDA NVidia: HDMI 2 (hw:1,8)', 'defaultSampleRate': '44100.0', 'maxInputChannels': '0'
        'index': '5', 'name': 'HDA NVidia: HDMI 3 (hw:1,9)', 'defaultSampleRate': '44100.0', 'maxInputChannels': '0'
        'index': '6', 'name': 'HDA NVidia: HDMI 0 (hw:2,3)', 'defaultSampleRate': '44100.0', 'maxInputChannels': '0'
        'index': '7', 'name': 'HDA NVidia: HDMI 1 (hw:2,7)', 'defaultSampleRate': '44100.0', 'maxInputChannels': '0'
        'index': '8', 'name': 'HDA NVidia: HDMI 2 (hw:2,8)', 'defaultSampleRate': '44100.0', 'maxInputChannels': '0'
        'index': '9', 'name': 'HDA NVidia: HDMI 3 (hw:2,9)', 'defaultSampleRate': '44100.0', 'maxInputChannels': '0'
        'index': '10', 'name': 'Logitech USB Headset: Audio (hw:3,0)', 'defaultSampleRate': '44100.0', 'maxInputChannels': '1'
        'index': '11', 'name': 'sysdefault', 'defaultSampleRate': '48000.0', 'maxInputChannels': '128'
        'index': '12', 'name': 'front', 'defaultSampleRate': '44100.0', 'maxInputChannels': '0'
        'index': '13', 'name': 'surround21', 'defaultSampleRate': '44100.0', 'maxInputChannels': '0'
        'index': '14', 'name': 'surround40', 'defaultSampleRate': '44100.0', 'maxInputChannels': '0'
        'index': '15', 'name': 'surround41', 'defaultSampleRate': '44100.0', 'maxInputChannels': '0'
        'index': '16', 'name': 'surround50', 'defaultSampleRate': '44100.0', 'maxInputChannels': '0'
        'index': '17', 'name': 'surround51', 'defaultSampleRate': '44100.0', 'maxInputChannels': '0'
        'index': '18', 'name': 'surround71', 'defaultSampleRate': '44100.0', 'maxInputChannels': '0'
        'index': '19', 'name': 'pulse', 'defaultSampleRate': '44100.0', 'maxInputChannels': '32'
        'index': '20', 'name': 'dmix', 'defaultSampleRate': '48000.0', 'maxInputChannels': '0'
        'index': '21', 'name': 'default', 'defaultSampleRate': '44100.0', 'maxInputChannels': '32'
        ``` 
        
        It can be seen that the last device (index 21) is considered default. But on this machine, a headset is being used as 
        the input device which has an index of 10. After finding the correct index the demo application can be invoked as below:
        
        ```console
        cobra_demo_mic --access_key {AccessKey} --audio_device_index 10
        ```
        
        If the problem persists we suggest storing the recorded audio into a file for inspection. This can be achieved by:
        
        ```console
        cobra_demo_mic --access_key {AccessKey} --audio_device_index 10 --output_path ~/test.wav
        ```
        
        If after listening to stored file there is no apparent problem detected please open an issue.
        
        ### File Demo
        
        It allows testing Cobra on a corpus of audio files. The demo is mainly useful for quantitative performance
        benchmarking. It accepts 16kHz audio files. Cobra processes a single-channel audio stream if a stereo file is
        provided it only processes the first (left) channel. The following processes a file looking for voice activities:
        
        ```console
        cobra_demo_file --access_key {AccessKey} --input_audio_path ${AUDIO_PATH}
        ```
        where `{AccessKey}` is an AccessKey which should be obtained from [Picovoice Console](https://console.picovoice.ai/). The threshold of the engine can be tuned using the `threshold` input argument:
        
        ```console
        cobra_demo_file --access_key {AccessKey} --input_audio_path ${AUDIO_PATH} \
         --threshold 0.9
        ```
        
        Threshold is a floating point number within `[0, 1]`. A higher threshold reduces the miss rate at the cost of increased false alarm rate.
        
Keywords: voice activity detection engine,VAD
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: Apache Software License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python :: 3
Classifier: Topic :: Multimedia :: Sound/Audio :: Speech
Requires-Python: >=3.5
Description-Content-Type: text/markdown
