Sonic Charge Bitspeek - Manual (Page 4)

User Interface
Rate (kHz)
Bitspeek performs its calculations at a designated fixed sample-rate, regardless of
the sample-rate your project is running at. The possible settings are 8 kHz, 11 kHz,
22 kHz and 44 -> 48 kHz
(the last mode will actually adjust to the project sample-
rate and select a rate between 44 and 48 kHz) . Notice that Bitspeek is still compati-
ble with any host sample-rate by performing automatic sample-rate conversion. The
Rate choice affects several other internal parameters in the DSP algorithms and
changing Rate will change the sound dramatically.
(Notice that the 44 kHz mode
may require a lot of CPU. In many cases, the 22 kHz mode works just as well.)
Frame Rate
The audio signal is analyzed and processed in blocks called "frames". For each
frame,
Bitspeek estimates the pitch, volume and formants of the incoming audio, as
well as the balance between "voiced" audio (e.g vowels) and "voiceless" (e.g., the
noise in a consonant) . By lowering the frame rate, the analysis will be performed
more rarely and you will achieve a cheaper toy-like sound. You can also "freeze" the
audio by dragging Frame Rate all the way down to 0. The parameter range is 0 to
80 Hz
(if Sync is off) and higher rates requires more CPU than lower rates.
Sync
Enable Sync to make Bitspeek "freeze" frames in sync with the tempo of your mu-
sic. When Sync is enabled, you may select various time synchronized rates (1/8, 1/
16 etc) with the Frame Rate slider instead of selecting a rate in Hz.
4! ! © 2010 NuEdge Development
Figure 1 Bitspeek Interface