Yamaha HTR-5835 Quantized bits, Cinema DSP, LFE 0.1 channel, Sampling frequency and number

•CINEMA DSP

Since the Dolby Surround and DTS systems were originally designed for use in movie theaters, their effect is best felt in a theater having many speakers and designed for acoustic effects. Since home conditions, such as room size, wall material, number of speakers, and so on, can differ so widely, it's inevitable that there are differences in the sound heard as well. Based on a wealth of actually measured data, YAMAHA CINEMA DSP uses YAMAHA original sound field technology to combine Dolby Pro Logic, Dolby Digital and DTS systems to provide the visual and audio experience of movie theater in the listening room of your own home.

•SILENT CINEMA

YAMAHA has developed a natural, realistic sound effect DSP algorithm for headphones.

Parameters for headphones have been set for each sound

field so that accurate representations of all the sound field

programs can be enioyed on hea@hones.

•Virtual CINEMA DSP

YAMAHA has developed a Virtual CINEMA DSP algorithm that allows you to enjoy DSP sound field

surround effects even without any surround speakers by using virtual surround speakers.

It is even possible to enjoy Virtual CINEMA DSP using a

minimal two-speaker system that does not include a center speaker.

•ITU-R

ITU-R is the radio communication sector of the ITU (International Telecommunication Union). ITU-R recommends a standard speaker placement which is used in many critical listening rooms, especially for mastering purposes.

•LFE 0.1 channel

This channel is for the reproduction of low bass signals. The fi'equency range for this channel is 20 Hz to 120 Hz. This channel is counted as 0.1 because it only enforces a

low frequency range compared to the full-range

reproduced by the other 5/6 channels in Dolby Digital or

DTS 5.1/6.1-channel systems.

•PCM (Linear PCM)

Linear PCM is a signal format under which an analog

audio signal is digitized, recorded and transmitted without

using any compression. This is used as a method of

recording CDs and DVD audio. The PCM system uses a

techniqne lbr smnpling the size of the analog signal per very small unit of time. Standing for "pulse code

modulation", the analog signal is encoded as pulses and

then modulated for recording.

•Sampling frequency and number of

quantized bits

When digitizing an analog audio signal, the number of times the signal is sampled per second is called the

sampling frequency, while the degree of fineness when

converting the sound level into a numeric value is called the number of quantized bits.

The range of rates that can be played back is determined based on the sampling rate, while the dynamic range

representing the sound level difference is determined by

the number of quantized bits. In principle, the higher the

sampling fi'equency, the wider the range of frequencies that can be played back, and the higher the number of quantized bits, the more finely the sound level can be reproduced.

73