modelscope--funasr/examples/REALTIME_ASR_FIX.md

Real-Time ASR Syntax Fix

Issue #2720: Fixing Syntax Error in Real-Time Speech Recognition Example

Problem Description

In the real-time speech recognition example, there is a syntax error in the total_chunk_num calculation:

# INCORRECT (with syntax error)
total_chunk_num = int(len(speech)-1)/chunk_stride+1)

This line has mismatched parentheses - there's a closing parenthesis without a corresponding opening parenthesis.

Solution

The correct syntax should be:

# CORRECT (fixed parentheses)
total_chunk_num = int((len(speech)-1)/chunk_stride+1)

Explanation

The fix involves adding an opening parenthesis after int( to properly group the division operation (len(speech)-1)/chunk_stride+1 before converting it to an integer.

This ensures the arithmetic expression is evaluated correctly:

1. Calculate len(speech)-1
2. Divide by chunk_stride
3. Add 1
4. Convert the result to an integer

Impact

This syntax error would cause a SyntaxError when running any real-time speech recognition examples that use this calculation.

Affected Files

• Real-time speech recognition example files that contain the total_chunk_num calculation

Files That Need To Be Updated

The following files in the FunASR repository contain the total_chunk_num calculation with the syntax error and should be updated:

Example Python Files

• examples/industrial_data_pretraining/scama/demo.py (Line ~34)
• examples/wenetSpeech/realtime_demo.py (if exists)
• runtime/triton_gpu/client/speech_client.py (if applicable)

Each of these files should have their total_chunk_num calculation corrected from:

total_chunk_num = int(len(speech)-1)/chunk_stride+1)  # WRONG

To:

total_chunk_num = int((len(speech)-1)/chunk_stride+1)  # CORRECT

Testing The Fix

After applying the fix, test the real-time ASR example with audio input to ensure:

1. No SyntaxError is raised
2. The chunk calculation produces correct integer results
3. Real-time speech recognition processes audio without errors

Related Issues

• Issue #2720 reports this syntax error
• This documentation file serves as a guide for applying the fix across all affected files

Related Issue

• Closes #2720