Riva Python Client isn't producing the proper streaming output for ASRs

AI & Data Science Deep Learning (Training & Inference) Riva
1

I’ve followed the Riva quickstart guide to deploy the default English ASR model. When I use the CLI, Riva produces the correct results for streaming. However, when I use the following script, the results are incomplete and the final result is empty. Please let me know what could be wrong here.

import riva.client


from copy import deepcopy

uri = "localhost:50051"

auth = riva.client.Auth(uri=uri)

asr_service = riva.client.ASRService(auth)


offline_config = riva.client.RecognitionConfig(language_code="en-US",encoding=riva.client.AudioEncoding.LINEAR_PCM)
streaming_config = riva.client.StreamingRecognitionConfig(config=deepcopy(offline_config), interim_results=True)


def interpret(consumed_message_value):
    audio_file_path="/opt/riva/wav/en-US_sample.wav"
    error_msg=""

    if error_msg:
        print(error_msg)
        return

    riva.client.add_audio_file_specs_to_config(streaming_config, audio_file_path)
    
    wav_parameters = riva.client.get_wav_file_parameters(audio_file_path)
    # correponds to 1 second of audio
    chunk_size = wav_parameters['framerate']

    audio_chunk_iterator = riva.client.AudioChunkFileIterator(audio_file_path, chunk_size)
    response_generator = asr_service.streaming_response_generator(audio_chunk_iterator, streaming_config)

    riva.client.print_streaming(response_generator, additional_info='confidence')


interpret(consumed_message_value={})

The output is:

>> what
Stability:    0.1000
----
>> what
Stability:    0.1000
----
>> what is
Stability:    0.1000
----
>> what is
Stability:    0.1000
----
>> what is
Stability:    0.1000
----
>> what is now
Stability:    0.1000
----
>> what is natural
Stability:    0.1000
----
>> what is natural
Stability:    0.1000
----
>> what is natural language
Stability:    0.1000
----
>> what is natural language
Stability:    0.1000
----
>> what is natural language
Stability:    0.1000
----
>> what is natural language
Stability:    0.1000
----
>> what 
Stability:    0.9000
>> is natural language Processing
Stability:    0.1000
----
>> what 
Stability:    0.9000
>> is natural language Processing
Stability:    0.1000
----
>> what is 
Stability:    0.9000
>> natural language Processing
Stability:    0.1000
----
>> what is 
Stability:    0.9000
>> natural language Processing
Stability:    0.1000
----
>> what is 
Stability:    0.9000
>> natural language Processing
Stability:    0.1000
----
>> what is 
Stability:    0.9000
>> language Processing
Stability:    0.1000
----
>> what is 
Stability:    0.9000
>> language Processing
Stability:    0.1000
----
----

Expected output should contain the following line according to my understanding:

## What is Natural Language Processing? 
Confidence: <some floating value>
2

Hi @sheikh.asif.imran

Thanks for your interest in Riva

Apologies for the delay, let me try to repro the same from my end, check and update you soon

Thanks