C-14 824 Reference Manual 9/13/00
RTA Mode Specifications
Filter types: 1/3 or 1/1 octave filters
with Flat SPL
Averaging
Exponential:
Linear:
Overall time:
1/32, 1/16, 1/8, 1/4, 1/2,
1, 2, 4, 8, 16, 32, 64
seconds
0.0025 to 99.995 sec-
onds
> 1 year
Linearity range: > 80 dB 1/3 octave
>75 dB 1/1 octave
Reference level range: 0 dB gain
Sample rate: 51,200 Hz
1/3 octave band fre-
quencies:
12.5 Hz - 20 kHz (33 fil-
ters)
1/1 octave band fre-
quencies:
16 Hz - 16 kHz (11
octaves)
Filter integrated
response:
≤
≤≤
≤
±0.15 dB for all filters
Real-time operation:
≤
≤ ≤
≤
±0.3 dB error for all fil-
ters tested with a swept
sinusoidal input
Anti-aliasing:
≥
≥≥
≥
75 dB
Summation of output
signals:
≤
≤ ≤
≤
±1.0 dB (±0.4 typical)
Flat frequency range: 10 Hz - 20 kHz, relative
attenuation <±0.15 dB
Filter type: Digital
Octave frequency ratio: Base 2
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