Use the following pieces of context to answer the question at the end. 
If you don't know the answer, just say that you don't know, don't try to make up an answer.

Context:
topic. In this way the AM module can send trigger signal
to the SRSM module to start or stop the recording of audio
signal from the microphone. And in the other way the SRSM
node has a publisher to a topic called ‘‘text_from_speech’’
to publish the result of the speech recognition process at
the end of the audio recording, in the other side the AM
will subscribe to this topic to get the text result from the
SRSM. Fig. 7 shows the communication structure of the
two modules.
In the AM module a graphical record button will be created
and linked to the ‘‘start_stop_REC’’ topic as shown in Fig. 8,
so when the user presses the button a ‘‘Start’’ message will
be sent to this topic and when it releases it a ‘‘Stop’’ message
will be sent to the same topic.
VOLUME 11, 2023 135429

topic. In this way the AM module can send trigger signal
to the SRSM module to start or stop the recording of audio
signal from the microphone. And in the other way the SRSM
node has a publisher to a topic called ‘‘text_from_speech’’
to publish the result of the speech recognition process at
the end of the audio recording, in the other side the AM
will subscribe to this topic to get the text result from the
SRSM. Fig. 7 shows the communication structure of the
two modules.
In the AM module a graphical record button will be created
and linked to the ‘‘start_stop_REC’’ topic as shown in Fig. 8,
so when the user presses the button a ‘‘Start’’ message will
be sent to this topic and when it releases it a ‘‘Stop’’ message
will be sent to the same topic.
VOLUME 11, 2023 135429

topic. In this way the AM module can send trigger signal
to the SRSM module to start or stop the recording of audio
signal from the microphone. And in the other way the SRSM
node has a publisher to a topic called ‘‘text_from_speech’’
to publish the result of the speech recognition process at
the end of the audio recording, in the other side the AM
will subscribe to this topic to get the text result from the
SRSM. Fig. 7 shows the communication structure of the
two modules.
In the AM module a graphical record button will be created
and linked to the ‘‘start_stop_REC’’ topic as shown in Fig. 8,
so when the user presses the button a ‘‘Start’’ message will
be sent to this topic and when it releases it a ‘‘Stop’’ message
will be sent to the same topic.
VOLUME 11, 2023 135429

topic. In this way the AM module can send trigger signal
to the SRSM module to start or stop the recording of audio
signal from the microphone. And in the other way the SRSM
node has a publisher to a topic called ‘‘text_from_speech’’
to publish the result of the speech recognition process at
the end of the audio recording, in the other side the AM
will subscribe to this topic to get the text result from the
SRSM. Fig. 7 shows the communication structure of the
two modules.
In the AM module a graphical record button will be created
and linked to the ‘‘start_stop_REC’’ topic as shown in Fig. 8,
so when the user presses the button a ‘‘Start’’ message will
be sent to this topic and when it releases it a ‘‘Stop’’ message
will be sent to the same topic.
VOLUME 11, 2023 135429

Question: what is the common topic the papers are based on


Answer: