Fresh off of the galloping heels of their BEQ3 British Console Equalizer Algorithm (note the Americanised spelling of Equaliser (note the Anglicized spelling of Americanized)), BTE Audio releases the BEQ4. Now all four of their British Equalizers can work together to change a light bulb. Oops, told the punchline without the setup again.

The BEQ4 works to emulate the smooth, versatile channel EQ modules that dominated British consoles in the 1980s, when the only thing bigger than the new wave grooves were the hairstyles. Oh, that one was ripe! The BEQ4 Algorithm brings it all into the digital domain, hairspray not included.

Fast Features:

• Extremely High Processing Efficiency.
• Supports sampling frequencies up to 384 kHz.
• Clickless parameter update.
• Proprietary topology which is optimized for low latency, low noise and high dynamic range.
• Supports both 32 bit (single precision) and 64 bit (double precision) floating-point processing.
• Built-in reference-quality upsampling algorithm which can be enabled at sampling frequencies 44.1 kHz and 48 kHz to achieve bell shape symmetry at high frequencies.
• Clearly and concisely implemented in pure C++: portable to any platform that is supported by a C++ compiler.

The BEQ4 British Console Equalizer Algorithm has four overlapping bands and low / high pass filters. These are their specifications.

• High Pass Filter: 18dB per octave slope. Cutoff Frequency is continuously variable from 20Hz to 350Hz.
• Low Pass Filter: 18dB per octave slope. Cutoff Frequency is continuously variable from 3kHz to 20kHz.
• Low Frequency Shelving/Peaking: Selectable filter type: Shelving or Peaking. Center Frequency is continuously variable from 40Hz to 450Hz. The amount of boost or attenuation is continuously variable from -18 dB to 18 dB in Peaking mode and from -15 dB to 15 dB in Shelving mode.
• Low Mid Frequency Peaking: Center Frequency is continuously variable from 160Hz to 2.2kHz. Quality Factor(Q) is continuously variable from 0.5 to 4.5. The amount of boost is continuously variable from 0 dB to 18 dB at highest Q setting and from 0 dB to 15 dB at lowest Q setting. And the amount of attenuation is continuously variable from 0 dB to -18 dB at highest Q setting and from 0 dB to -15 dB at lowest Q setting.
• High Mid Frequency Peaking: Center Frequency is continuously variable from 600Hz to 10kHz. Quality Factor(Q) is continuously variable from 0.5 to 4.5. The amount of boost is continuously variable from 0 dB to 18 dB at highest Q setting and from 0 dB to 15 dB at lowest Q setting. And the amount of attenuation is continuously variable from 0 dB to -18 dB at highest Q setting and from 0 dB to -15 dB at lowest Q setting.
• High Frequency Shelving/Peaking: Selectable filter type: Shelving or Peaking. Center Frequency is continuously variable from 1.5kHz to 20kHz. The amount of boost or attenuation is continuously variable from -18 dB to 18 dB in Peaking mode and from -15 dB to 15 dB in Shelving mode.