YM2610, aka OPNB, is a fifteen-channel sound chip

Sound chip

A sound chip is an integrated circuit designed to produce sound . It might be doing this through digital, analog or mixed-mode electronics...

 developed by Yamaha. It's a member of Yamaha's OPN family of FM synthesis

Frequency modulation synthesis

A 220 Hz carrier tone modulated by a 440 Hz modulating tone with various choices of modulation index, β. The time domain signals are illustrated above, and the corresponding spectra are shown below ....

 chips, and related to the YM2608

Yamaha YM2608

thumb|right|Yamaha YM2608YM2608, aka OPNA, is a sixteen-channel sound chip developed by Yamaha. It's a member of Yamaha's OPN family of FM synthesis chips, and the successor to the YM2203...

. It was most notably used in SNK's

SNK Playmore

SNK Playmore Corporation is a Japanese video game hardware and software company. SNK is an acronym of , which was SNK's original name. The company's legal and trading name became SNK in 1986....

 Neo Geo

Neo Geo (console)

The is a cartridge-based arcade and home video game system released on July 1, 1991 by Japanese game company SNK. Being in the Fourth generation of Gaming, it was the first console in the former Neo Geo family, which only lived through the 1990s...

 arcade and home game systems, along with other arcade game

Arcade game

An arcade game is a coin-operated entertainment machine, usually installed in public businesses such as restaurants, bars, and amusement arcades. Most arcade games are video games, pinball machines, electro-mechanical games, redemption games, and merchandisers...

 systems.

The YM2610 has the following features:

• Four concurrent FM channels (voices), four operators per channel
• Three SSG channels
• One programmable noise channel
• ADPCM-A: Six ADPCM
  Adaptive DPCM
  Adaptive differential pulse-code modulation is a variant of differential pulse-code modulation that varies the size of the quantization step, to allow further reduction of the required bandwidth for a given signal-to-noise ratio....
  
   channels, 18.5kHz sampling rate
• ADPCM-B: One ADPCM channel, 1.8–55.5kHz sampling rate
• Two interval timers
  Programmable Interval Timer
  In computing and in embedded systems, a programmable interval timer is a counter which triggers an interrupt when it reaches the programmed count.- Common features :...
  
  
• A low frequency oscillator
  Low frequency oscillation
  Low-frequency oscillation is an electronic signal, which is usually below 20 Hz and creates a rhythmic pulse or sweep. This pulse or sweep is often used to modulate synthesizers, delay lines and other audio equipment in order to create effects used in the production of electronic music. Audio...
  
   (LFO)

The YM2610 was used in conjunction with a YM3016

Yamaha YM3016

thumb|YM3016The YM3016, aka DAC-GS, is a floating point digital-to-analog converter chip developed by Yamaha. It generates stereo analog output from either a two-channel serial or a 16-bit binary/two's complement input, the sound data containing a 10-bit mantissa and 7-bit exponent...

 stereo DAC

Digital-to-analog converter

In electronics, a digital-to-analog converter is a device that converts a digital code to an analog signal . An analog-to-digital converter performs the reverse operation...

.