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Mayah Audio Encoders and Decoders
C1131   C1151   MAYAH WhitePapers
C1131 C1151
1. Basic Principles, Practices and Applications of Audio Over IP

The C1131 audio encoder has been designed as the entry category to the C11 audio codec world. The C1141 are bi-directional codecs, able to encode and decode simultaneously.

They are powerful, fully scalable devices with the most modern Audio via IP architecture and audio coding formats, but provide an efficient economic solution for broadcasters and telcos. RTP and SIP, as the basic technology for corporate and public networks, offer the flexibility needed.

The C1151 advanced audio encoders are part of the C11 Advanced Codec series. The C1141 are bi-directional codecs, able to encode and decode simultaneously. Based on the C1131 they however offer additional storage interfaces and extension slots for POTS, UMTS/3G and other expansion cards. These capabilities make them the ideal companions for Sporty and Flashman II in a studio environment and with additional storage they are perfectly equipped for many new hardware codec uses, e.g., in-codec logging or regional advertising insertion and many other possible uses.

Technical Specifications:

AD / DA converter

24 bit

Frequency range

<= 10 Hz to 21.4 kHz (48 kHz, -3 dB)

Signal-to-Noise ratio

>= 100dB (linear PCM)

Line In (18dBu)

100 kOhm

Line Out (18dBu max.) impedance

50 Ohm

C1130 / 31 audio interfaces

Analog Input / Output (4x XLR bal.), AES/EBU In/Out/Sync In (1x DB9), 1x Headph. Output (1x 1/4" jack)

Communication interfaces

1x Ethernet 10/100 (RJ45)

Miscellaneous interfaces

4x Opto In / Relay Out (1x DB15), 1x USB TypeA, 1x USB mini

Algorithms

G.711, G.722, MPEG L2/L3, MPEG-2/4 AAC, MPEG-4 HE AACv2, AAC ELD, Linear (16 - 24 bit), DAT (Lin.12 bit), apt-X/Eaptx (optional), AES transp. (optional)

C1131 User Interface

4x LED level meters, status LEDs, LCD display + keypad, Web Remote

Power supply / consumption

100 to 240 VAC, 50 to 60 Hz, +12V Out / 8 - 12 W

Width

219 mm (8.6")

Depth

278 mm (10.9")

Height

44,5 mm (1U, 1.7")

Net weight

approx. 2,55 kg

Technical Specifications:

AD / DA converter

24 bit

Frequency range

<= 10 Hz to 21.4 kHz (48 kHz, -3 dB)

Signal-to-Noise ratio

>= 100dB (linear PCM)

Line In (18dBu)

100 kOhm

Line Out (18dBu max.) impedance

50 Ohm

C1150 / 51 audio interfaces

Analog Line/Mic Input (2x XLR bal., 48V), Analog Output (2x XLR bal.), AES/EBU In/Out/Sync In (1x DB9), 1x Headph. Output (1x 1/4" jack)

Communication interfaces

1x Ethernet 10/100 (RJ45), 3G/UMTS (optional via PC card)

Storage

SD card, USB, CF card (via PC card)

Miscellaneous interfaces

4x Opto In / Relay Out (1x DB15), 1x USB TypeA, 1x USB mini

Algorithms

G.711, G.722, MPEG L2/L3, MPEG-2/4 AAC, MPEG-4 HE AACv2, AAC ELD, Linear (16 - 24 bit), DAT (Lin.12 bit), apt-X/Eaptx (optional), AES transp. (optional)

C1151 User Interface

4x LED level meters, status LEDs, LCD display + keypad, Web Remote

Power supply / consumption

100 to 240 VAC, 50 to 60 Hz, +12V Out / 8 - 12 W

Width

219 mm (8.6")

Depth

278 mm (10.9")

Height

44,5 mm (1U, 1.7")

Net weight

approx. 2,55 kg