Author Topic: What is the audio mixing circuit in N8 pro?  (Read 591 times)

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Offline nidku53

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What is the audio mixing circuit in N8 pro?
« on: November 28, 2019, 02:36 AM »
Curious that  What is benefit for audio mixing circuit in N8 pro?

Decision between old N8 and a new one.

Offline nuu

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Re: What is the audio mixing circuit in N8 pro?
« Reply #1 on: November 28, 2019, 11:43 AM »
It's using a proper amplifier chip rather than the simple one made of resistors in the original N8. The difference would be a higher maximum volume for expansion audio. On the original N8 the expansion audio's max volume is too low, and is drowned by the normal audio.

Offline oskarzer0

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Re: What is the audio mixing circuit in N8 pro?
« Reply #2 on: November 28, 2019, 05:13 PM »
It's using a proper amplifier chip rather than the simple one made of resistors in the original N8. The difference would be a higher maximum volume for expansion audio. On the original N8 the expansion audio's max volume is too low, and is drowned by the normal audio.

Hello!

"expansion audio" is a mod for NES? What is your function? Thanks!

Offline nidku53

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Re: What is the audio mixing circuit in N8 pro?
« Reply #3 on: November 29, 2019, 02:23 PM »
It's using a proper amplifier chip rather than the simple one made of resistors in the original N8. The difference would be a higher maximum volume for expansion audio. On the original N8 the expansion audio's max volume is too low, and is drowned by the normal audio.

You mean the old N8 is more distorted than the N8 pro?

Offline nuu

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Re: What is the audio mixing circuit in N8 pro?
« Reply #4 on: November 30, 2019, 05:38 PM »
No, not distortion, the volume level is lower than on the pro for expansion audio channels.

Expansion audio is not a mod, it's when there is an audio chip inside the cartridge (example games: Akumajou Densetsu, Gimmick, Metal Slader Glory and many others) that is mixed with the audio from the Famicom, allowing more channels ("instruments") in the sound than what the Famicom and NES can do alone. The NES doesn't support expansion audio without modding it, but Famicom do. That's why Akumajou Densetsu has expansion audio while the NES version (Castlevania 3) doesn't.

The difference is that any sound that comes from a cartridge audio chip (expansion audio) will be very quiet on the old N8 compared to the pro. That's why you almost don't hear the sound effects in Gimmick on the old N8 on a Famicom (on NES you don't hear it at all unless its modded).
« Last Edit: November 30, 2019, 05:40 PM by nuu »

Offline oskarzer0

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Re: What is the audio mixing circuit in N8 pro?
« Reply #5 on: December 01, 2019, 02:49 AM »
Expansion audio is not a mod, it's when there is an audio chip inside the cartridge (example games: Akumajou Densetsu, Gimmick, Metal Slader Glory and many others) that is mixed with the audio from the Famicom, allowing more channels ("instruments") in the sound than what the Famicom and NES can do alone. The NES doesn't support expansion audio without modding it, but Famicom do. That's why Akumajou Densetsu has expansion audio while the NES version (Castlevania 3) doesn't.

I have a hvc-101 (AV Famicom).  Support it expansion audio without modding it? Thanks!

Offline nidku53

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Re: What is the audio mixing circuit in N8 pro?
« Reply #6 on: December 01, 2019, 09:40 AM »
No, not distortion, the volume level is lower than on the pro for expansion audio channels.

Expansion audio is not a mod, it's when there is an audio chip inside the cartridge (example games: Akumajou Densetsu, Gimmick, Metal Slader Glory and many others) that is mixed with the audio from the Famicom, allowing more channels ("instruments") in the sound than what the Famicom and NES can do alone. The NES doesn't support expansion audio without modding it, but Famicom do. That's why Akumajou Densetsu has expansion audio while the NES version (Castlevania 3) doesn't.

The difference is that any sound that comes from a cartridge audio chip (expansion audio) will be very quiet on the old N8 compared to the pro. That's why you almost don't hear the sound effects in Gimmick on the old N8 on a Famicom (on NES you don't hear it at all unless its modded).

Thank you 👍

Offline nuu

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Re: What is the audio mixing circuit in N8 pro?
« Reply #7 on: December 01, 2019, 04:10 PM »
Yes all Famicoms supports expansion audio.