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The figure shows the actual measured
waveform of a bit-expanded -90dB
sinusoidal signal.
-90dB, 1kHz Sine Wave: Bit Expansion Off
The figure shows the frequency spectra of a music signal with the range expansion on
and off. With the expansion off, the level is sharply reduced beyond 22kHz. But with
the expansion on, the level is naturally extended beyond 22kHz and higher.
-90dB, 1kHz Sine Wave: Bit Expansion On
Expansion ON
Expansion OFF
Level (dB)
Frequency (kHz)
VISUAL PROOF
CC Converter
CC Converter
Comparison of -90dB, 1kHz Sine Waves: Bit Expansion On vs. Off
Comparison of -90dB, 1kHz Sine Waves: Bit Expansion On vs. Off
Comparison of Frequency Spectra: Range Expansion On vs. Off
Comparison of Frequency Spectra: Range Expansion On vs. Off
CC Converter
ON
CC Converter
OFF
Frequency (Hz)
COMPRESSION MODE
COMPRESSION MODE
(for MP3, WMA, etc.)
LINEAR MODE
LINEAR MODE
(for CDs, DVDs, etc.)
Level
RX-D702
RX-D702