OPERATIONS OF FUNCTIONS

1. Karaoke program

Functions for processing the Karaoke audio signals are described here.

Function

Description

Control register

Coefficient register

Controllable

mode

De-emphasis

De-emphasizes audio input signal that has been emphasized.

Specifies a sampling frequency and on/off of de-emphasis.

OPR[1]

OPR[7:6]

N,E

Input Fader

Controls fade-in/out for audio input signal.

Specifies fade-in/out for each channel after setting fade time (See Note.)

VCR[1:0]

TMR[7:0]

N,E

Voice Cancel

Reduces mid-range signal of inputted audio signal that is located in the center of the sound field such vocal signal

generated by stereophonic CD.

Specifies voice cancel on/off after setting sampling frequency and fade time. (See Note.)

VCR[4]

TMR[7:0]

OPR[7:6]

N,E

Key Control

Changes key of inputted audio signal, and controls key shift for audio input signal. The amount of key shift must be

specified.

KSR[4:0]

N,E

Tone Control

Controls tone of inputted audio signal in three frequency bands.

Specifies the levels for bass (fc = 200 Hz), treble (fc = 5 kHz), and mid-tone (fc = 1 kHz) after selecting a sampling

frequency.

TCR[7:0]

RVR[3:0]

OPR[7:6]

E

Surround

Applies YMERSION surround to audio input signal. One of four types of surround modes is selected and Output

levels for R and L channels are set individually based on the selected surround mode.

KSR[6:5]

C01,C04

N,E

Microphone

level detection

Detects and reads the level of signal input from microphone.

Specifies the time constant for level detection.

MLR[7:0]

C14

E

Microphone

Echo

Applies echo to signal from microphone processed by setting delay and feedback.

Specifies delay time, feedback level and output signal level for L/R.

C05,C08,C0B,C0C

C16,C17,C00,C03

N,E

Stereo Echo

Expands echo by providing stereophonic output.

C1A,C1B

E

Reverberation Echo Damps echo naturally by adding reverb function.

RVR[4]

E

Microphone

key control

Applies microphone echo by subjecting signal inputted from microphone to key shift.

Specifies the amount of key shift and output signal level for L/R.

KER[7:0]

C18,C19

E

Microphone

YMERSION

Applies YMERSION to microphone echo to obtain expansion that is specific to YMERSION.

Specifies output signal level for L/R.

C1C,C1D

E

Soft Mute

Noiseless mute, Specifies on/off.

OPR[3]

N,E

Volume

Controls volume.

Some of the functions can be set in either of KP2 standard mode or KP2V extended mode, some only in KP2V

extended mode.

C02,C06,C09,C0A

C0D,C0E,C0F,C15

C1E,C1F

N,E

Note ; The fade time is applicable to the input fader and voice cancel functions.

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