Degener, J., "Digital Speech Compression", Dr. Dobb's Journal, December 1994.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....Figure 8: G.729 Annex E (backward adaptive mode) bit packing 4.5. 8 GSM GSM (group speciale mobile) denotes the European GSM 06.10 standard for full rate speech transcoding, ETS 300 961, which is based on RPE LTP (residual pulse excitation long term prediction) coding at a rate of 13 kb s [12, 13, 14]. The text of the standard can be obtained from ETSI (European Telecommunications Standards Institute) ETSI Secretariat: B.P.152 F 06561 Valbonne Cedex France Phone: 33 92 94 42 00 Fax: 33 93 65 47 16 Blocks of 160 audio samples are compressed into 33 octets, for an e#ective data rate of ....

.... 3 19 xmc[6] 3 57 xmc[36] 3 20 xmc[7] 3 58 xmc[37] 3 21 xmc[8] 3 59 xmc[38] 3 22 xmc[9] 3 60 Nc[3] 7 23 xmc[10] 3 61 bc[3] 2 24 xmc[11] 3 62 Mc[3] 2 25 xmc[12] 3 63 xmaxc[3] 6 26 Nc[1] 7 64 xmc[39] 3 27 bc[1] 2 65 xmc[40] 3 28 Mc[1] 2 66 xmc[41] 3 29 xmaxc[1] 6 67 xmc[42] 3 30 xmc[13] 3 68 xmc[43] 3 31 xmc[14] 3 69 xmc[44] 3 32 xmc[15] 3 70 xmc[45] 3 33 xmc[16] 3 71 xmc[46] 3 34 xmc[17] 3 72 xmc[47] 3 35 xmc[18] 3 73 xmc[48] 3 36 xmc[19] 3 74 xmc[49] 3 37 xmc[20] 3 75 xmc[50] 3 38 xmc[21] 3 76 xmc[51] 3 Table 2: Ordering of GSM variables Octet Bit 0 Bit 1 Bit 2 Bit 3 ....

Degener, J., "Digital Speech Compression," Dr. Dobb's Journal, December 1994.

....draft draft ietf avt pro le new 12.ps November 20, 2001 4.5. 8 GSM GSM (group speciale mobile) denotes the European GSM 06.10 standard for full rate speech transcoding, ETS 300 961, which is based on RPE LTP (residual pulse excitation long term prediction) coding at a rate of 13 kb s [11, 12, 13]. The text of the standard can be obtained from ETSI (European Telecommunications Standards Institute) ETSI Secretariat: B.P.152 F 06561 Valbonne Cedex France Phone: 33 92 94 42 00 Fax: 33 93 65 47 16 Blocks of 160 audio samples are compressed into 33 octets, for an e ective data rate of ....

.... xmc[30] 3 14 xmc[1] 3 52 xmc[31] 3 15 xmc[2] 3 53 xmc[32] 3 16 xmc[3] 3 54 xmc[33] 3 17 xmc[4] 3 55 xmc[34] 3 18 xmc[5] 3 56 xmc[35] 3 19 xmc[6] 3 57 xmc[36] 3 20 xmc[7] 3 58 xmc[37] 3 21 xmc[8] 3 59 xmc[38] 3 22 xmc[9] 3 60 Nc[3] 7 23 xmc[10] 3 61 bc[3] 2 24 xmc[11] 3 62 Mc[3] 2 25 xmc[12] 3 63 xmaxc[3] 6 26 Nc[1] 7 64 xmc[39] 3 27 bc[1] 2 65 xmc[40] 3 28 Mc[1] 2 66 xmc[41] 3 29 xmaxc[1] 6 67 xmc[42] 3 30 xmc[13] 3 68 xmc[43] 3 31 xmc[14] 3 69 xmc[44] 3 32 xmc[15] 3 70 xmc[45] 3 33 xmc[16] 3 71 xmc[46] 3 34 xmc[17] 3 72 xmc[47] 3 35 xmc[18] 3 73 xmc[48] 3 36 xmc[19] 3 74 ....

J. Degener, \Digital speech compression," Dr. Dobb's Journal, Dec. 1994.

....3 0 1 2 0 1 2 3 0 1 2 4.5. 8 GSM GSM (group speciale mobile) denotes the European GSM 06.10 standard for full rate speech transcoding, ETS 300 961, which is based on RPE LTP (residual pulse excitation long term prediction) coding at a rate of 13 kb s [13, 14, 15]. The text of the standard can be obtained from ETSI (European Telecommunications Standards Institute) ETSI Secretariat: B.P.152 F 06561 Valbonne Cedex France Phone: 33 92 94 42 00 Fax: 33 93 65 47 16 Blocks of 160 audio samples are compressed into 33 octets, for an effective data rate of ....

.... 3 20 xmc[7] 3 58 xmc[37] 3 21 xmc[8] 3 59 xmc[38] 3 22 xmc[9] 3 60 Nc[3] 7 23 xmc[10] 3 61 bc[3] 2 24 xmc[11] 3 62 Mc[3] 2 25 xmc[12] 3 63 xmaxc[3] 6 26 Nc[1] 7 64 xmc[39] 3 27 bc[1] 2 65 xmc[40] 3 28 Mc[1] 2 66 xmc[41] 3 29 xmaxc[1] 6 67 xmc[42] 3 30 xmc[13] 3 68 xmc[43] 3 31 xmc[14] 3 69 xmc[44] 3 32 xmc[15] 3 70 xmc[45] 3 33 xmc[16] 3 71 xmc[46] 3 34 xmc[17] 3 72 xmc[47] 3 35 xmc[18] 3 73 xmc[48] 3 36 xmc[19] 3 74 xmc[49] 3 37 xmc[20] 3 75 xmc[50] 3 38 xmc[21] 3 76 xmc[51] 3 Table 2: Ordering of GSM variables Schulzrinne Casner Expires July 14, 2000 [Page 15] ....

J. Degener, "Digital speech compression," Dr. Dobb's Journal, Dec. 1994.

....3 0 1 2 0 1 2 3 0 1 2 4.5. 9 GSM GSM (group speciale mobile) denotes the European GSM 06.10 standard for full rate speech transcoding, ETS 300 961, which is based on RPE LTP (residual pulse excitation long term prediction) coding at a rate of 13 kb s [13, 14, 15]. The text of the standard can be obtained from ETSI (European Telecommunications Standards Institute) ETSI Secretariat: B.P.152 F 06561 Valbonne Cedex France Phone: 33 92 94 42 00 Fax: 33 93 65 47 16 Blocks of 160 audio samples are compressed into 33 octets, for an effective data rate of ....

.... 3 20 xmc[7] 3 58 xmc[37] 3 21 xmc[8] 3 59 xmc[38] 3 22 xmc[9] 3 60 Nc[3] 7 23 xmc[10] 3 61 bc[3] 2 24 xmc[11] 3 62 Mc[3] 2 25 xmc[12] 3 63 xmaxc[3] 6 26 Nc[1] 7 64 xmc[39] 3 27 bc[1] 2 65 xmc[40] 3 28 Mc[1] 2 66 xmc[41] 3 29 xmaxc[1] 6 67 xmc[42] 3 30 xmc[13] 3 68 xmc[43] 3 31 xmc[14] 3 69 xmc[44] 3 32 xmc[15] 3 70 xmc[45] 3 33 xmc[16] 3 71 xmc[46] 3 34 xmc[17] 3 72 xmc[47] 3 35 xmc[18] 3 73 xmc[48] 3 36 xmc[19] 3 74 xmc[49] 3 37 xmc[20] 3 75 xmc[50] 3 38 xmc[21] 3 76 xmc[51] 3 Table 2: Ordering of GSM variables Schulzrinne Casner Expires April 21, 2000 [Page 16] ....

J. Degener, "Digital speech compression," Dr. Dobb's Journal, Dec. 1994.

....1 2 3 0 1 2 0 1 2 3 0 1 2 4.5. 9 GSM GSM (group speciale mobile) denotes the European GSM 06.10 standard for full rate speech transcoding, ETS 300 961, which is based on RPE LTP (residual pulse excitation long term prediction) coding at a rate of 13 kb s [13, 14, 15]. The text of the standard can be obtained from ETSI (European Telecommunications Standards Institute) ETSI Secretariat: B.P.152 F 06561 Valbonne Cedex France Phone: 33 92 94 42 00 Fax: 33 93 65 47 16 Blocks of 160 audio samples are compressed into 33 octets, for an effective data rate of 13,200 ....

.... 3 57 xmc[36] 3 20 xmc[7] 3 58 xmc[37] 3 21 xmc[8] 3 59 xmc[38] 3 22 xmc[9] 3 60 Nc[3] 7 23 xmc[10] 3 61 bc[3] 2 24 xmc[11] 3 62 Mc[3] 2 25 xmc[12] 3 63 xmaxc[3] 6 26 Nc[1] 7 64 xmc[39] 3 27 bc[1] 2 65 xmc[40] 3 28 Mc[1] 2 66 xmc[41] 3 29 xmaxc[1] 6 67 xmc[42] 3 30 xmc[13] 3 68 xmc[43] 3 31 xmc[14] 3 69 xmc[44] 3 32 xmc[15] 3 70 xmc[45] 3 33 xmc[16] 3 71 xmc[46] 3 34 xmc[17] 3 72 xmc[47] 3 35 xmc[18] 3 73 xmc[48] 3 36 xmc[19] 3 74 xmc[49] 3 37 xmc[20] 3 75 xmc[50] 3 38 xmc[21] 3 76 xmc[51] 3 Table 2: Ordering of GSM variables Schulzrinne Casner Expires December 25, 1999 [Page 16] ....

J. Degener, "Digital speech compression," Dr. Dobb's Journal, Dec. 1994.

....LCD controller and its local frame buffer memory if any exists. Thread integration has promise for these markets as it eliminates hardware, cutting system size, cost, weight and time to market. The second application, a digital cellphone integrated into a car, features GSM 06.10 speech compression [5] and uses the CAN 2.0A [2] protocol for communication with other devices within the vehicle. CAN is popular in automotive applications for multiplex communications, reducing the wiring harness size, cost, weight and failure rate while simplifying assembly. Providing a common databus in a vehicle ....

....integration uses nearly all of the idle cycles in LCDRow to perform useful work, and mitigates about half of the performance impact of implementing LCD refresh in software. 4. 2 Vehicle Cellphone with External Network The two digital cellphone examples use GSM 06.10 lossy speech compression [5] integrated with a communication protocol. These applications have tight cost, size, weight and power constraints yet benefit from protocol inclusion. Thread integration is used to eliminate network 0 319 1 2 317 318 Data Clock FIGURE 6. LCD refresh timing and CPU activity. CPU Active Overhead ....

Jutta Degener, "Digital Speech Compression", Dr. Dobbs Journal, December 1994, http://www.ddj.com/ddj/1994/1994_12/ degener.htm, http://kbs.cs.tu-berlin.de/~jutta/toast.html.

....2 3 0 1 2 0 1 2 3 0 1 2 4.5. 10 GSM GSM (group speciale mobile) denotes the European GSM 06.10 standard for full rate speech transcoding, ETS 300 961, which is based on RPE LTP (residual pulse excitation long term prediction) coding at a rate of 13 kb s [13, 14, 15]. The text of the standard can be obtained from ETSI (European Telecommunications Standards Institute) ETSI Secretariat: B.P.152 F 06561 Valbonne Cedex France Phone: 33 92 94 42 00 Fax: 33 93 65 47 16 Blocks of 160 audio samples are compressed into 33 octets, for an effective data rate of 13,200 ....

.... 3 57 xmc[36] 3 20 xmc[7] 3 58 xmc[37] 3 21 xmc[8] 3 59 xmc[38] 3 22 xmc[9] 3 60 Nc[3] 7 23 xmc[10] 3 61 bc[3] 2 24 xmc[11] 3 62 Mc[3] 2 25 xmc[12] 3 63 xmaxc[3] 6 26 Nc[1] 7 64 xmc[39] 3 27 bc[1] 2 65 xmc[40] 3 28 Mc[1] 2 66 xmc[41] 3 29 xmaxc[1] 6 67 xmc[42] 3 30 xmc[13] 3 68 xmc[43] 3 31 xmc[14] 3 69 xmc[44] 3 32 xmc[15] 3 70 xmc[45] 3 33 xmc[16] 3 71 xmc[46] 3 34 xmc[17] 3 72 xmc[47] 3 35 xmc[18] 3 73 xmc[48] 3 36 xmc[19] 3 74 xmc[49] 3 37 xmc[20] 3 75 xmc[50] 3 38 xmc[21] 3 76 xmc[51] 3 Table 2: Ordering of GSM variables Schulzrinne Expires August 26, 1999 [Page 16] INTERNET DRAFT ....

J. Degener, "Digital speech compression," Dr. Dobb's Journal, Dec. 1994.

....distinguishing talkspurt from comfort noise packets. 4.5. 10 GSM GSM (group speciale mobile) denotes the European GSM 06.10 provisional standard for full rate speech transcoding, prI ETS 300 036, which is based on RPE LTP (residual pulse excitation long term prediction) coding at a rate of 13 kb s [9, 10, 11]. The text of the standard can be obtained from ETSI (European Telecommunications Standards Institute) ETSI Secretariat: B.P.152 F 06561 Valbonne Cedex France Phone: 33 92 94 42 00 Fax: 33 93 65 47 16 Schulzrinne Expires May 18, 1999 [Page 13] INTERNET DRAFT draft ietf avt profile new 04.ps ....

.... 2 49 xmc[28] 3 12 xmaxc[0] 6 50 xmc[29] 3 13 xmc[0] 3 51 xmc[30] 3 14 xmc[1] 3 52 xmc[31] 3 15 xmc[2] 3 53 xmc[32] 3 16 xmc[3] 3 54 xmc[33] 3 17 xmc[4] 3 55 xmc[34] 3 18 xmc[5] 3 56 xmc[35] 3 19 xmc[6] 3 57 xmc[36] 3 20 xmc[7] 3 58 xmc[37] 3 21 xmc[8] 3 59 xmc[38] 3 22 xmc[9] 3 60 Nc[3] 7 23 xmc[10] 3 61 bc[3] 2 24 xmc[11] 3 62 Mc[3] 2 25 xmc[12] 3 63 xmaxc[3] 6 26 Nc[1] 7 64 xmc[39] 3 27 bc[1] 2 65 xmc[40] 3 28 Mc[1] 2 66 xmc[41] 3 29 xmaxc[1] 6 67 xmc[42] 3 30 xmc[13] 3 68 xmc[43] 3 31 xmc[14] 3 69 xmc[44] 3 32 xmc[15] 3 70 xmc[45] 3 33 xmc[16] 3 71 xmc[46] 3 34 xmc[17] 3 72 xmc[47] 3 35 ....

J. Degener, "Digital speech compression," Dr. Dobb's Journal, Dec. 1994.

....GSM RPE LTP algorithm and the software simulation in occam2. The material in this chapter is based on the mathematical and functional descriptions of the algorithm found in the GSM Full Rate Speech Transcoding, Recommendation 06.10, version 3.2.0 standard document [3] and Dr. Dobb s Journal [1] [2]. Designing the GSM algorithm is essentially a two step process: first, we design the functions in the math library and second, using these functions we design the processing blocks of the algorithm. The operations in the math functions library represent the primary building blocks of the ....

....n m = snd tran m n ; dstl n ; map n (muxr m ) 4.11) This function captures a n Theta m multiplexor. Essentially, it is an extension of muxr, and the following property holds true: gsm mux 1 m = muxrm A Ruby diagram of gsm mux n m is shown in Figure 4.5. MUXR m MUXR m MUXR m s x [1] x [n] s s x [2] m x n TRAN 1 2 m 1 2 m x [2] x [2] x [2] x [1] x [1] x [1] x [1] x [2] x [n] m m m DSTL n s, x [2] x [2] x [2] s, x [1] x [1] x [1] 1 2 m 1 2 m s, x [n] x [n] x [n] 1 2 m 1 2 m x [n] x [n] x [n] s x [1] x ....

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Degener, Jutta. "Digital Speech Compression", Dr. Dobb's Journal, Issue 224, Miller Freeman, California, December 1994.

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Degener, J., "Digital Speech Compression", Dr. Dobb's Journal, December 1994.

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J. Degener, "Digital speech compression," Dr. Dobb's Journal, Dec. 1994.

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J. Degener, "Digital Speech Compression", http://www.ddj.com/documents/s=1012/ddj9412b/9412b.htm (current November 2001)

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