TrueSpeech® Co-Processor
PRELIMINARY/CONFIDENTIAL
Version: 1.18
9.13.3
Speech Frame Delete
The frame delete command deletes a speech frame from the transmit or receive buffers, if the buffer is not empty.
The status reply indicates the number of frames deleted.
RECORD:
Delete Record Frame:
Status:
5116H
0 or 1
The number of frames deleted. If the buffer is empty at the time this
command is called, there will be no frames to delete and the status reply will
be 0.
If the buffer is not empty, and a frame is deleted, the status reply will be 1.
PLAYBACK:
Delete Playback Frame: 5216H
Status:
0 or 1
The number of frames deleted. If the buffer is empty at the time this
command is called, there will be no frames to delete and the status reply will
be 0.
If the buffer is not empty, and a frame is deleted, the status reply will be 1.
9.13.4
Playback & Record Buffer Freeze (Pause)
The Buffer Freeze command stops output from the playback buffer in the playback channel and input to the record
buffer in the record channel. The Buffer Freeze command can be used to implement a pause feature. When the
playback channel is paused, it outputs silence to the external CODEC. Freezing the playback channel can also be
used at the start of playback to pre-load the channel with buffers before the actual start of playback. This creates a
reservoir of speech frames within the CT8022 that can be used for smoothing out fluctuations in the rate at which
speech frames arrive for playback. The state of the CT8022 internal freeze flag bits can be modified in any mode of
operation: IDLE, PLAYBACK, RECORD or FULL DUPLEX.
RECORD:
Freeze Record Channel: 5113H
Status:
5113H
Unfreeze Record
Channel:
Status:
5114H
5114H
Read Record Freeze
State:
Status:
5115H
0 or 1
The status returns 1 if the channel is currently in the freeze state, 0 otherwise.
PLAYBACK:
Freeze Playback
Channel:
Status:
5213H
5213H
Un-Freeze Playback
Channel:
Status:
5214H
5214H
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DSP GROUP, INC., 3120 SCOTT BOULEVARD CT8022A11AQC FW Revision 0118
SANTA CLARA, CA 95054 PH: 408 986 – 4300 FAX: 408 986 – 4490
All specifications are subject to change without prior notice.
ETC [ ETC ]
