Signal processing apparatus, control method for signal processing apparatus, and recording medium

A control method for a signal processing apparatus, the control method comprising:

• acquiring first time information;
• performing signal processing on an acoustic signal to generate first acoustic data including the acquired first time information;
• measuring processing time for the signal processing based on the acquired first time information and the first acoustic data;
• acquiring second time information indicating a time after measuring the processing time;
• performing signal processing on the acoustic signal to generate second acoustic data that does not include the first time information and the acquired second time information;
• correcting the second time information based on the processing time;
• and
• recording the second acoustic data synchronized in time with the corrected second time information.

A non-transitory computer-readable recording medium storing a program for causing a signal processing apparatus to execute a control method, the control method comprising:

• acquiring first time information;
• performing signal processing on an acoustic signal to generate first acoustic data including the acquired first time information;
• measuring processing time for the signal processing based on the acquired first time information and the first acoustic data;
• acquiring second time information indicating a time after measuring the processing time;
• performing signal processing on the acoustic signal to generate second acoustic data that does not include the first time information and the acquired second time information;
• correcting the second time information based on the processing time;
• and
• recording the second acoustic data synchronized in time with the corrected second time information.

A control method for a signal processing system, the control method comprising:

• acquiring first time information;
• performing signal processing on an acoustic signal to generate first acoustic data including the acquired first time information;
• measuring processing time for the signal processing based on the acquired first time information and the first acoustic data;
• acquiring second time information indicating a time after measuring the processing time;
• performing signal processing on the acoustic signal to generate second acoustic data that does not include the first time information and the acquired second time information;
• correcting the second time information based on the processing time;
• and
• recording the second acoustic data synchronized in time with the corrected second time information.

A signal processor comprising:

• a memory configured to store instructions;
• and
• a processor configured to execute the instructions to:
• receive first time identification information;
• process an acoustic signal to generate first acoustic data that includes the received first time identification information;
• measure a time duration for the processing of the acoustic signal;
• receive second time identification information indicating a time after the measured time duration of the processing of the acoustic signal;
• correct the second time identification information based on the time duration;
• re-process the acoustic signal to generate second acoustic data;
• and
• record the second acoustic data with the corrected second time identification information.