AES Section Meeting Reports

Angel González España and the student of sala de audio

Meeting Topic: Neumann digital microphones

Speaker Name: Angel González España, Sennheiser-Neumann Manager for Latin America and the Caribbean

Other business or activities at the meeting: A little intervention of the students is program for this week, so this day was given a small conference by Claudia Cabrera Cruz, the topic was "The formation of the polar patterns in the microphones".

Meeting Location: Sala de Audio, México D.F.

Summary

In this meeting we learn about the new digital microphones, how they work, and the advantage of digital audio. In the new digital microphones the most important factor is to have a good analogue/digital (A/D) conversion.

Neumann went into the digital microphones market looking for the following:
• Top quality A/D conversion
• A dynamic range of around 130 dB
• Ideal coupling between the mic's capsule and electronics
• High impedance and capacitive source
• A power source in the nV order

In an analogue recording structure we would have a microphone with a range of around 130 dB followed by a preamp and the A/D converter (ADC) (there to improve the signal to noise ratio); a digital sound processor (DSP), a digital fader and then a way out. Neumann decided to use the AES42-2001; SBU; S/P DIF protocol out.

This experience was great, because we learn about new technology.

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