Yamaha Dx7 Service Manual
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it takes until Ll is reached from L4. The larger the Rl value, the sharper the attack. Rates and levels determine the basic shape of the envelope, but the actual envelope shape is affected by output level and key scaling. 3. Output Level Buffer Output level buffer receives data concerning key scaling, after touch, and output level from the CPU. Actual values used for Ll to L4 are determined by the data stored in this buffer. Key scaling changes the output level as shown below.
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4. Frequency Buffer Frequency data related to key code, pitch envelope, and transposition is received from the CPU and stored in the frequency buffer. 5. Rate Scaling Buffer Data used to determine rate values according to key scaling is stored in the rate scaling buffer. 6.Values used for Rl to R4 are determined by the data stored in the frequency and rate scaling buffers. 7. Key Event Buffer Key states (ON/OFF) are stored in the key event buffer. 8. Modulation Sensitivity Buffer Amplitude modulation...
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