Drajver Zvukovoj Karti Yamaha Ymf724 W
Results 1 - 10 of 39 - Yamaha YMF724/740/744/754 Win7 drivers. Sound Card, Audio, zvukova karta, Drivers, manuals.it's contents does not necessarily reflect.
Contents • • • • • • Sample-based synthesis component [ ] The sample synthesis part is based on (PCM). It features: • Up to 24 simultaneous sounds (voices) • Output sampling frequency of 44.1 kHz (it can also accept 22.05-kHz samples – they are up-sampled to 44.1 kHz before output) • Waveform data lengths of 8, 12, or 16 • Stereo output (with a 4-bit/16-level pan for each voice) The PCM synthesizer part accepts: • Up to 4 of external memory for wave data • Up to 512 samples • External or memory. If SRAM is connected, then wave data can be downloaded from the OPL4. • Chip select signals for 128, 512 KB, 1 MB, or 2 MB memory can be output. Frequency modulation synthesis component [ ] The FM part is essentially a (OPL3) block; thus, it is also backwards-compatible with the (OPL) and the (OPL2).
Like the OPL3, it can operate in one of four ways: • 18 two-operator FM channels • 6 four-operator FM channels + 6 two-operator FM channels • 15 two-operator FM channels + 5 FM drums • 6 four-operator FM channels + 3 two-operator FM channels + 5 FM drums Four-operator FM allows more complex sounds but reduces polyphony. Eight waveforms are available for the FM synthesis: • simple sine • half sine • absolute sine • quarter sine • alternating sine • 'camel' sine • square • logarithmic sawtooth Unlike the OPL3, which has four channels for sound output, the OPL4 features six channels.
YMF278B on a Yamaha Sound Edge SW20 PC card (near top left) Applications [ ] The YMF278B was used in the and in Yamaha's SoundEdge sound card for and compatibles. A stripped-down version of the YMF278 (removing the FM synthesis section) was built for as the MultiPCM. Yamaha internally identifies the chip as the YMFA1005 whereas Sega uses the part number 315-5560. This version of the chip was used in conjunction with the which provided sound timer controls.
Connectivity [ ] For ROM wave data access, the Yamaha YRW801 2MB ROM chip can be connected to the OPL4. It holds approximately 330 samples, mostly 22.05-kHz 12-bit samples with some drums at 44.1 kHz. It is compatible with the standard (128 melody sounds, 47 percussion sounds). For sound effects, the OPL4 can be connected to the Yamaha YSS225 effects processor (EP), which adds various sound effects.
Like all its predecessors, the OPL4 outputs audio in digital-I/O form, thus requiring an external chip. For this purpose, the Yamaha YAC513 DAC was designed. References [ ] • External links [ ] • • •.
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