matlab pdm转pcm_如何把数字麦克风输出的PDM信号转换成PCM

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我是靠谱客的博主安详荔枝，最近开发中收集的这篇文章主要介绍matlab pdm转pcm_如何把数字麦克风输出的PDM信号转换成PCM，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

.syntax unified

.cpu cortex-m4

.fpu fpv4-sp-d16

@; .eabi_attribute 20, 1

@; .eabi_attribute 21, 1

@; .eabi_attribute 23, 3

@; .eabi_attribute 24, 1

@; .eabi_attribute 25, 1

@; .eabi_attribute 26, 2

@; .eabi_attribute 30, 2

@; .eabi_attribute 18, 2

.thumb

@; ===========================================================================

@; Segment type: Externs

@; ===========================================================================

.global __aeabi_fcmpeq

.global __aeabi_fmul

.global __aeabi_f2d

.global __aeabi_i2d

.global __aeabi_ddiv

.global __aeabi_dadd

.global __aeabi_d2uiz

.global __aeabi_dmul

@; ===========================================================================

.section .text.PDM_Filter_Init

.code 16

.weak PDM_Filter_Init

.type PDM_Filter_Init, %function

@; ===========================================================================

PDM_Filter_Init:

PUSH.W {R3-R11,LR}

@; LDR R2, =0xF407A5C2 @test data

@; LDR R3, =0x40023000 @CRC BASE

MOV R5, R0

@; STR R2, [R3] @load 0xF407A5C2 into crc data register

@; LDR R3, [R3] @get contents of crc data register

@; LDR R2, =0xB5E8B5CD @load control word

MOVS R6, #0

@; CMP R3, R2 @compare crc32 and awaited result

@; BNE loc_42 @ Checking that it's really CPU, that manufatured by ST.

@; LDR R2, =stm32_crc @get contents of

LDR R7, [R0,#4] @LP_HZ

ADD.W R4, R0, #0x10

@; STR R3, [R2] @save 0xB5E8B5CD into =stm32_crc variable

STR R6, [R4,#0xC]

STR R6, [R0,#0x10]

STR R6, [R4,#8]

STR R6, [R4,#4]

STR R6, [R4,#0x18]

STR R6, [R4,#0x14]

STR R6, [R4,#0x10]

MOV R0, R7

MOVS R1, #0

BL __aeabi_fcmpeq @fcmpeq(LP_HZ, 0)

CBZ R0, loc_44

B loc_90

@; ---------------------------------------------------------------------------

@;loc_42:

@; B loc_42

@; ---------------------------------------------------------------------------

loc_44:

MOV R0, R7

MOV.W R1, #0x43800000

BL __aeabi_fmul

BL __aeabi_f2d

MOV R8, R0

MOV R0, R7

MOV R9, R1

BL __aeabi_f2d

MOV R6, R0

LDRH R0, [R5]

MOV R7, R1

BL __aeabi_i2d

ADR R3, dword_F8

LDRD.W R2, R3, [R3]

BL __aeabi_ddiv

MOV R2, R0

MOV R3, R1

MOV R0, R6

MOV R1, R7

BL __aeabi_dadd

MOV R2, R0

MOV R3, R1

MOV R0, R8

MOV R1, R9

BL __aeabi_ddiv

BL __aeabi_d2uiz

STRH R0, [R4,#0x1C]

B loc_92

@; ---------------------------------------------------------------------------

loc_90:

STRH R6, [R4,#0x1C]

loc_92:

LDR R7, [R5,#8]

MOVS R1, #0

MOV R0, R7

BL __aeabi_fcmpeq

CBNZ R0, loc_E4

LDRH R6, [R5]

LSLS R0, R6, #8

BL __aeabi_i2d

MOV R10, R0

MOV R0, R7

MOV R11, R1

BL __aeabi_f2d

ADR R3, dword_F8

LDRD.W R2, R3, [R3]

BL __aeabi_dmul

MOV R8, R0

MOV R0, R6

MOV R9, R1

BL __aeabi_i2d

MOV R2, R0

MOV R3, R1

MOV R0, R8

MOV R1, R9

BL __aeabi_dadd

MOV R2, R0

MOV R3, R1

MOV R0, R10

MOV R1, R11

BL __aeabi_ddiv

BL __aeabi_d2uiz

STRH R0, [R4,#0x1E]

B loc_E8

@; ---------------------------------------------------------------------------

loc_E4:

MOVS R3, #0

STRH R3, [R4,#0x1E]

loc_E8:

LDRH R2, [R5]

MOV.W R3, #0x3E8

UDIV.W R3, R2, R3

STRH R3, [R4,#0x20]

POP.W {R3-R11,PC}

@; End of function PDM_Filter_Init

@; ---------------------------------------------------------------------------

.align 8

dword_F8:

.word 0x51EB851F, 0x40191EB8

@;dword_100:

@; .word 0xF407A5C2

@;dword_104:

@; .word 0x40023000

@;dword_108:

@; .word 0xB5E8B5CD

@;off_10C:

@; .word stm32_crc @; DATA XREF: PDM_Filter_Init+16r

@ENDP

.size PDM_Filter_Init, .-PDM_Filter_Init

@; ===========================================================================

.section .text.PDM_Filter_64_LSB

.code 16

.weak PDM_Filter_64_LSB

.type PDM_Filter_64_LSB, %function

@; ===========================================================================

PDM_Filter_64_LSB:

var_A4 = -0xA4

var_9C = -0x9C

var_94 = -0x94

var_90 = -0x90

var_8C = -0x8C

var_88 = -0x88

var_84 = -0x84

var_80 = -0x80

var_7C = -0x7C

var_78 = -0x78

var_74 = -0x74

var_70 = -0x70

var_6C = -0x6C

var_68 = -0x68

var_64 = -0x64

var_60 = -0x60

var_5C = -0x5C

var_58 = -0x58

var_54 = -0x54

var_50 = -0x50

var_4C = -0x4C

var_48 = -0x48

var_44 = -0x44

var_40 = -0x40

var_3C = -0x3C

var_38 = -0x38

var_34 = -0x34

var_30 = -0x30

var_2C = -0x2C

PUSH.W {R4-R11,LR}

SUB SP, SP, #0x84

STR R2, [SP,#0xA8+var_2C]

@; LDR R2, =stm32_crc @load address of stm32_crc

STR R1, [SP,#0xA8+var_30]

@; LDR R1, [R2] @load 0xB5E8B5CD that in stm32_crc ram var

@; LDR R2, =0xB5E8B5CD @load awaited value

@; CMP R1, R2

@; BEQ loc_126 @if all ok, do the stuff

@;loc_124:

@; B loc_124

@; ---------------------------------------------------------------------------

loc_126:

ADD.W R2, R3, #0x10

LDR R4, [R2,#0x14]

LDR R1, [R2,#0x10]

STR R4, [SP,#0xA8+var_7C]

LDR R4, [R2,#0xC]

STR R1, [SP,#0xA8+var_88]

LDR R1, [R2,#8]

STR R4, [SP,#0xA8+var_90]

LDRH R4, [R2,#0x1E]

STR R1, [SP,#0xA8+var_94]

LDRH R1, [R3,#0xC]

LDR R5, [R2,#0x18]

STR R4, [SP,#0xA8+var_74]

MOVS R4, #6

MULS R4, R1

STR R5, [SP,#0xA8+var_84]

LDRH R5, [R2,#0x1C]

MOV.W R9, R1,LSL#2

MOV.W R11, R1,LSL#3

STR R5, [SP,#0xA8+var_78]

LSLS R5, R1, #1

ADD.W R8, R5, R1

ADD.W R10, R9, R1

STR R4, [SP,#0xA8+var_48]

RSB.W R12, R1, R11

MOVS R4, #0

LDR R7, [R3,#0x10]

LDR R6, [R2,#4]

STR R5, [SP,#0xA8+var_60]

STR.W R8, [SP,#0xA8+var_50]

STR.W R9, [SP,#0xA8+var_5C]

STR.W R10, [SP,#0xA8+var_4C]

STR.W R11, [SP,#0xA8+var_54]

STR.W R12, [SP,#0xA8+var_44]

STR R4, [SP,#0xA8+var_8C]

STR R1, [SP,#0xA8+var_9C]

STR R3, [SP,#0xA8+var_A4]

B loc_3B0

@; ---------------------------------------------------------------------------

loc_188:

LDRB.W R8, [R0]

LDR.W R10, =T2

LDR R5, [SP,#0xA8+var_9C]

LDRB.W R4, [R10,R8]

LDR.W R9, [SP,#0xA8+var_60]

ADDS R6, R6, R4

STR R6, [SP,#0xA8+var_80]

LDRB.W R12, [R0,R5]

LDR R6, =T1

LDRB.W R4, [R10,R12]

LDRB.W R5, [R6,R8]

LDR R1, [SP,#0xA8+var_50]

ADD.W R4, R4, R5,LSL#1

ADDS R7, R4, R7

STR R7, [SP,#0xA8+var_70]

LDRB.W R4, [R0,R9]

LDR R7, =T0

LDRB.W R5, [R10,R4]

LDRB.W R8, [R7,R8]

LDRB.W R11, [R0,R1]

ADD R5, R8

LDRB.W R8, [R6,R12]

LDRB.W R9, [R7,R12]

ADD.W R5, R5, R8,LSL#1

LDRB.W R8, [R10,R11]

LDRB.W R12, [R6,R4]

ADD R9, R8

ADD.W R12, R9, R12,LSL#1

LDR R3, [SP,#0xA8+var_5C]

STR.W R12, [SP,#0xA8+var_6C]

LDRB.W R9, [R0,R3]

LDRB R4, [R7,R4]

LDRB.W R12, [R10,R9]

LDRB.W R8, [R6,R11]

ADD R4, R12

ADD.W R8, R4, R8,LSL#1

LDR R4, [SP,#0xA8+var_6C]

STR.W R8, [SP,#0xA8+var_68]

ADD R4, R8

LDR.W R8, [SP,#0xA8+var_4C]

STR R4, [SP,#0xA8+var_38]

LDRB.W R12, [R0,R8]

LDRB.W R8, [R7,R11]

LDRB.W R4, [R10,R12]

LDR R1, [SP,#0xA8+var_48]

ADD R4, R8

LDRB.W R8, [R6,R9]

LDRB.W R9, [R7,R9]

ADD.W R4, R4, R8,LSL#1

ADD.W R11, R4, R5

STR.W R11, [SP,#0xA8+var_34]

LDRB.W R8, [R0,R1]

LDRB.W R11, [R10,R8]

ADD R9, R11

LDRB.W R11, [R6,R12]

ADD.W R11, R9, R11,LSL#1

STR.W R11, [SP,#0xA8+var_64]

LDR R3, [SP,#0xA8+var_70]

LDRB.W R12, [R7,R12]

ADD R3, R11

LDR.W R11, [SP,#0xA8+var_44]

STR R3, [SP,#0xA8+var_3C]

LDRB.W R9, [R0,R11]

LDRB.W R11, [R6,R8]

LDRB.W R10, [R10,R9]

LDR R1, [SP,#0xA8+var_6C]

ADD R12, R10

ADD.W R11, R12, R11,LSL#1

LDR.W R12, [SP,#0xA8+var_80]

MOV.W R10, R5,LSL#4

ADD R12, R11

STR.W R12, [SP,#0xA8+var_40]

RSB.W R10, R5, R10

LDRB.W R12, [R7,R8]

MOV.W R8, #0xA

MLA.W R10, R8, R1, R10

LDRB.W R6, [R6,R9]

LDR R3, [SP,#0xA8+var_64]

STR.W R11, [SP,#0xA8+var_58]

ADD R10, R3

LDR.W R11, [SP,#0xA8+var_68]

ADD.W R6, R12, R6,LSL#1

ADD.W R12, R4, R4,LSL#1

ADD R10, R12

LDRB.W R7, [R7,R9]

MOV.W R9, #6

MLA.W R10, R9, R11, R10

LDR R1, [SP,#0xA8+var_90]

LDR R3, [SP,#0xA8+var_80]

ADD R10, R1

MOV.W R12, #0x1C

MLA.W R10, R12, R3, R10

LDR R1, [SP,#0xA8+var_70]

MOV.W R11, #0x15

MLA.W R10, R11, R1, R10

LDR R3, [SP,#0xA8+var_34]

STR.W R10, [SP,#0xA8+var_80]

MOV.W R10, #0x2E @; '.'

MUL.W R10, R10, R3

LDR R1, [SP,#0xA8+var_38]

MOVS R3, #0x30 @; '0'

MLA.W R10, R3, R1, R10

LDR R1, [SP,#0xA8+var_94]

LDR R3, [SP,#0xA8+var_40]

ADD R1, R10

MOV.W R10, #0x24 @; '$'

MLA.W R3, R10, R3, R1

LDR R1, [SP,#0xA8+var_3C]

ADD R10, R9

MLA.W R1, R10, R1, R3

STR R1, [SP,#0xA8+var_90]

LDR R1, [SP,#0xA8+var_6C]

ADD.W R5, R5, R5,LSL#1

MLA.W R9, R9, R1, R5

LSLS R5, R4, #4

SUBS R4, R5, R4

LDR R3, [SP,#0xA8+var_68]

ADD R9, R4

MLA.W R9, R8, R3, R9

LDR R4, [SP,#0xA8+var_58]

LDR R5, [SP,#0xA8+var_64]

MLA.W R9, R12, R4, R9

MLA.W R9, R11, R5, R9

LDR R1, [SP,#0xA8+var_70]

LDR R3, [SP,#0xA8+var_80]

LDR R4, [SP,#0xA8+var_74]

ADD R1, R9

STR R1, [SP,#0xA8+var_94]

SUB.W R10, R3, #0x20000

CBZ R4, loc_33E

LDR R5, [SP,#0xA8+var_88]

LDR R1, [SP,#0xA8+var_7C]

LDR R3, [SP,#0xA8+var_74]

SUBS R4, R5, R1

ADD R4, R10

MULS R4, R3

IT MI

ADDMI R4, #0xFF

ASRS R4, R4, #8

STR.W R10, [SP,#0xA8+var_7C]

STR R4, [SP,#0xA8+var_88]

MOV R10, R4

loc_33E:

LDR R4, [SP,#0xA8+var_78]

CBZ R4, loc_35C

LDR R5, [SP,#0xA8+var_84]

RSB.W R4, R4, #0x100

MULS R4, R5

LDR R1, [SP,#0xA8+var_78]

MLA.W R4, R1, R10, R4

CMP R4, #0

IT LT

ADDLT R4, #0xFF

ASRS R4, R4, #8

STR R4, [SP,#0xA8+var_84]

MOV R10, R4

loc_35C:

LDR R3, [SP,#0xA8+var_2C]

MUL.W R10, R3, R10

CMP.W R10, #0

BLE loc_372

ADD.W R10, R10, #8

MOV.W R10, R10,ASR#4

B loc_380

@; ---------------------------------------------------------------------------

loc_372:

SUBS.W R12, R10, #8

IT MI

ADDMI.W R12, R10, #7

MOV.W R10, R12,ASR#4

loc_380:

LDR R5, [SP,#0xA8+var_A4]

LDR.W R8, [SP,#0xA8+var_8C]

LDRH R4, [R5,#0xE]

MOVW R12, #0x7FBC

MUL.W R4, R4, R8

LDR R5, =0xFFFF8044

CMP R10, R12

IT LT

MOVLT R12, R10

LDR R1, [SP,#0xA8+var_30]

LDR R3, [SP,#0xA8+var_54]

CMP R12, R5

IT GE

MOVGE R5, R12

ADD.W R8, R8, #1

STRH.W R5, [R1,R4,LSL#1]

ADDS R0, R0, R3

STR.W R8, [SP,#0xA8+var_8C]

loc_3B0:

LDRH R4, [R2,#0x20]

LDR R5, [SP,#0xA8+var_8C]

CMP R5, R4

BLT.W loc_188

LDR R3, [SP,#0xA8+var_A4]

LDR R1, [SP,#0xA8+var_94]

STR R7, [R3,#0x10]

LDR R3, [SP,#0xA8+var_90]

STR R1, [R2,#8]

STR R3, [R2,#0xC]

LDR R5, [SP,#0xA8+var_88]

LDR R1, [SP,#0xA8+var_7C]

LDR R3, [SP,#0xA8+var_84]

STR R6, [R2,#4]

STR R5, [R2,#0x10]

STR R1, [R2,#0x14]

STR R3, [R2,#0x18]

MOV R0, R4

ADD SP, SP, #0x84

POP.W {R4-R11,PC}

@; End of function PDM_Filter_64_LSB

@; ---------------------------------------------------------------------------

@;off_3DC:

@; .word stm32_crc

@;dword_3E0:

@; .word 0xB5E8B5CD

off_3E4:

.word T1

off_3E8:

.word T0

dword_3EC:

.word 0xFFFF8044

off_3F0:

.word T2

@; .text.PDM_Filter_64_LSB ends

@ENDP

.size PDM_Filter_64_LSB, .-PDM_Filter_64_LSB

@; Segment type: Uninitialized

@; .section .bss.stm32_crc

@; @; ORG 0xCEC

@; .global stm32_crc

@; stm32_crc % 4

@; .bss.stm32_crc ends

@; ===========================================================================

@; Segment type: Pure data

.section .data.T0

.align 0

@; ORG 0xCF0

@.export T0

@; ===========================================================================

T0:

.byte 0, 0x1C, 0x15, 0x31, 0xF, 0x2B, 0x24, 0x40

.byte 0xA, 0x26, 0x1F, 0x3B, 0x19, 0x35, 0x2E, 0x4A

.byte 6, 0x22, 0x1B, 0x37, 0x15, 0x31, 0x2A, 0x46

.byte 0x10, 0x2C, 0x25, 0x41, 0x1F, 0x3B, 0x34, 0x50

.byte 3, 0x1F, 0x18, 0x34, 0x12, 0x2E, 0x27, 0x43

.byte 0xD, 0x29, 0x22, 0x3E, 0x1C, 0x38, 0x31, 0x4D

.byte 9, 0x25, 0x1E, 0x3A, 0x18, 0x34, 0x2D, 0x49

.byte 0x13, 0x2F, 0x28, 0x44, 0x22, 0x3E, 0x37, 0x53

.byte 1, 0x1D, 0x16, 0x32, 0x10, 0x2C, 0x25, 0x41

.byte 0xB, 0x27, 0x20, 0x3C, 0x1A, 0x36, 0x2F, 0x4B

.byte 7, 0x23, 0x1C, 0x38, 0x16, 0x32, 0x2B, 0x47

.byte 0x11, 0x2D, 0x26, 0x42, 0x20, 0x3C, 0x35, 0x51

.byte 4, 0x20, 0x19, 0x35, 0x13, 0x2F, 0x28, 0x44

.byte 0xE, 0x2A, 0x23, 0x3F, 0x1D, 0x39, 0x32, 0x4E

.byte 0xA, 0x26, 0x1F, 0x3B, 0x19, 0x35, 0x2E, 0x4A

.byte 0x14, 0x30, 0x29, 0x45, 0x23, 0x3F, 0x38, 0x54

.byte 0, 0x1C, 0x15, 0x31, 0xF, 0x2B, 0x24, 0x40

.byte 0xA, 0x26, 0x1F, 0x3B, 0x19, 0x35, 0x2E, 0x4A

.byte 6, 0x22, 0x1B, 0x37, 0x15, 0x31, 0x2A, 0x46

.byte 0x10, 0x2C, 0x25, 0x41, 0x1F, 0x3B, 0x34, 0x50

.byte 3, 0x1F, 0x18, 0x34, 0x12, 0x2E, 0x27, 0x43

.byte 0xD, 0x29, 0x22, 0x3E, 0x1C, 0x38, 0x31, 0x4D

.byte 9, 0x25, 0x1E, 0x3A, 0x18, 0x34, 0x2D, 0x49

.byte 0x13, 0x2F, 0x28, 0x44, 0x22, 0x3E, 0x37, 0x53

.byte 1, 0x1D, 0x16, 0x32, 0x10, 0x2C, 0x25, 0x41

.byte 0xB, 0x27, 0x20, 0x3C, 0x1A, 0x36, 0x2F, 0x4B

.byte 7, 0x23, 0x1C, 0x38, 0x16, 0x32, 0x2B, 0x47

.byte 0x11, 0x2D, 0x26, 0x42, 0x20, 0x3C, 0x35, 0x51

.byte 4, 0x20, 0x19, 0x35, 0x13, 0x2F, 0x28, 0x44

.byte 0xE, 0x2A, 0x23, 0x3F, 0x1D, 0x39, 0x32, 0x4E

.byte 0xA, 0x26, 0x1F, 0x3B, 0x19, 0x35, 0x2E, 0x4A

.byte 0x14, 0x30, 0x29, 0x45, 0x23, 0x3F, 0x38, 0x54

@; .data.T0 ends

.size T0, .-T0

@; ===========================================================================

@; Segment type: Pure data

.section .data.T1

.align 0

@; ORG 0xDF0

@.export T1

@; ===========================================================================

T1:

.byte 0, 0x12, 0x15, 0x27, 0x17, 0x29, 0x2C, 0x3E

.byte 0x18, 0x2A, 0x2D, 0x3F, 0x2F, 0x41, 0x44, 0x56

.byte 0x30, 0x42, 0x45, 0x57, 0x47, 0x59, 0x5C, 0x6E

.byte 0x17, 0x29, 0x2C, 0x3E, 0x2E, 0x40, 0x43, 0x55

.byte 0x2F, 0x41, 0x44, 0x56, 0x46, 0x58, 0x5B, 0x6D

.byte 0x47, 0x59, 0x5C, 0x6E, 0x5E, 0x70, 0x73, 0x85

.byte 0x15, 0x27, 0x2A, 0x3C, 0x2C, 0x3E, 0x41, 0x53

.byte 0x2D, 0x3F, 0x42, 0x54, 0x44, 0x56, 0x59, 0x6B

.byte 0x45, 0x57, 0x5A, 0x6C, 0x5C, 0x6E, 0x71, 0x83

.byte 0x2C, 0x3E, 0x41, 0x53, 0x43, 0x55, 0x58, 0x6A

.byte 0x44, 0x56, 0x59, 0x6B, 0x5B, 0x6D, 0x70, 0x82

.byte 0x5C, 0x6E, 0x71, 0x83, 0x73, 0x85, 0x88, 0x9A

.byte 0x12, 0x24, 0x27, 0x39, 0x29, 0x3B, 0x3E, 0x50

.byte 0x2A, 0x3C, 0x3F, 0x51, 0x41, 0x53, 0x56, 0x68

.byte 0x42, 0x54, 0x57, 0x69, 0x59, 0x6B, 0x6E, 0x80

.byte 0x29, 0x3B, 0x3E, 0x50, 0x40, 0x52, 0x55, 0x67

.byte 0x41, 0x53, 0x56, 0x68, 0x58, 0x6A, 0x6D, 0x7F

.byte 0x59, 0x6B, 0x6E, 0x80, 0x70, 0x82, 0x85, 0x97

.byte 0x27, 0x39, 0x3C, 0x4E, 0x3E, 0x50, 0x53, 0x65

.byte 0x3F, 0x51, 0x54, 0x66, 0x56, 0x68, 0x6B, 0x7D

.byte 0x57, 0x69, 0x6C, 0x7E, 0x6E, 0x80, 0x83, 0x95

.byte 0x3E, 0x50, 0x53, 0x65, 0x55, 0x67, 0x6A, 0x7C

.byte 0x56, 0x68, 0x6B, 0x7D, 0x6D, 0x7F, 0x82, 0x94

.byte 0x6E, 0x80, 0x83, 0x95, 0x85, 0x97, 0x9A, 0xAC

@; .data.T1 ends

.size T1, .-T1

@; ===========================================================================

@; Segment type: Pure data

.section .data.T2

.align 0

@; ORG 0xEF0

@.export T2

@; ===========================================================================

T2:

.byte 0, 0, 1, 1, 3, 3, 4, 4

.byte 6, 6, 7, 7, 9, 9, 0xA, 0xA

.byte 0xA, 0xA, 0xB, 0xB, 0xD, 0xD, 0xE, 0xE

.byte 0x10, 0x10, 0x11, 0x11, 0x13, 0x13, 0x14, 0x14

.byte 0xF, 0xF, 0x10, 0x10, 0x12, 0x12, 0x13, 0x13

.byte 0x15, 0x15, 0x16, 0x16, 0x18, 0x18, 0x19, 0x19

.byte 0x19, 0x19, 0x1A, 0x1A, 0x1C, 0x1C, 0x1D, 0x1D

.byte 0x1F, 0x1F, 0x20, 0x20, 0x22, 0x22, 0x23, 0x23

.byte 0x15, 0x15, 0x16, 0x16, 0x18, 0x18, 0x19, 0x19

.byte 0x1B, 0x1B, 0x1C, 0x1C, 0x1E, 0x1E, 0x1F, 0x1F

.byte 0x1F, 0x1F, 0x20, 0x20, 0x22, 0x22, 0x23, 0x23

.byte 0x25, 0x25, 0x26, 0x26, 0x28, 0x28, 0x29, 0x29

.byte 0x24, 0x24, 0x25, 0x25, 0x27, 0x27, 0x28, 0x28

.byte 0x2A, 0x2A, 0x2B, 0x2B, 0x2D, 0x2D, 0x2E, 0x2E

.byte 0x2E, 0x2E, 0x2F, 0x2F, 0x31, 0x31, 0x32, 0x32

.byte 0x34, 0x34, 0x35, 0x35, 0x37, 0x37, 0x38, 0x38

.byte 0x1C, 0x1C, 0x1D, 0x1D, 0x1F, 0x1F, 0x20, 0x20

.byte 0x22, 0x22, 0x23, 0x23, 0x25, 0x25, 0x26, 0x26

.byte 0x26, 0x26, 0x27, 0x27, 0x29, 0x29, 0x2A, 0x2A

.byte 0x2C, 0x2C, 0x2D, 0x2D, 0x2F, 0x2F, 0x30, 0x30

.byte 0x2B, 0x2B, 0x2C, 0x2C, 0x2E, 0x2E, 0x2F, 0x2F

.byte 0x31, 0x31, 0x32, 0x32, 0x34, 0x34, 0x35, 0x35

.byte 0x35, 0x35, 0x36, 0x36, 0x38, 0x38, 0x39, 0x39

.byte 0x3B, 0x3B, 0x3C, 0x3C, 0x3E, 0x3E, 0x3F, 0x3F

.byte 0x31, 0x31, 0x32, 0x32, 0x34, 0x34, 0x35, 0x35

.byte 0x37, 0x37, 0x38, 0x38, 0x3A, 0x3A, 0x3B, 0x3B

.byte 0x3B, 0x3B, 0x3C, 0x3C, 0x3E, 0x3E, 0x3F, 0x3F

.byte 0x41, 0x41, 0x42, 0x42, 0x44, 0x44, 0x45, 0x45

.byte 0x40, 0x40, 0x41, 0x41, 0x43, 0x43, 0x44, 0x44

.byte 0x46, 0x46, 0x47, 0x47, 0x49, 0x49, 0x4A, 0x4A

.byte 0x4A, 0x4A, 0x4B, 0x4B, 0x4D, 0x4D, 0x4E, 0x4E

.byte 0x50, 0x50, 0x51, 0x51, 0x53, 0x53, 0x54, 0x54

@; .data.T2 ends

.size T2, .-T2

@ENDP

.end

18028703418

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本文分类：matlab pdm转pcm
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发布日期：2023-05-11 12:17:02
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matlab pdm转pcm_如何把数字麦克风输出的PDM信号转换成PCM

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matlab pdm转pcm_如何把数字麦克风输出的PDM信号转换成PCM

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