manually fixed spelling errors from codec2 #406

CMakeLists.txt

@@ -119,7 +119,7 @@ option(BUILD_SHARED_LIBS
     "Build shared library. Set to OFF for static library." ON)
 option(UNITTEST "Build unittest binaries." OFF)
 
-# LPCNet needs to be bootstraped because codec2 and freedvlpcnet are
+# LPCNet needs to be bootstrapped because codec2 and freedvlpcnet are
 # cross dependent.
 option(LPCNET "Build codec2 with LPCNet support." OFF)
 set(LPCNET_BUILD_DIR FALSE CACHE PATH "Location of lpcnet build tree.")

README_data.md

@@ -157,7 +157,7 @@ From the callers point of view, the frame format of each burst is:
 | Preamble | payload data | CRC | payload data | CRC | ........... | Postamble | 
            | frame 1 -----------| frame 2 -----------| ... frame N |
 ```
-In the next layer down, each frame is comprised of several OFDM "modem frames", that contain pilot, unique word, and FEC symbols to handle syncronisation and error correction over the challenging HF channel.  The preamble and postamble are used to locate the burst and estimate it's frequency offset.  Having both a pre and postamble increases the probability of successful detection of the burst in a fading channel. Here are some single frame bursts on a MPP channel at 5dB SNR:
+In the next layer down, each frame is comprised of several OFDM "modem frames", that contain pilot, unique word, and FEC symbols to handle synchronisation and error correction over the challenging HF channel.  The preamble and postamble are used to locate the burst and estimate it's frequency offset.  Having both a pre and postamble increases the probability of successful detection of the burst in a fading channel. Here are some single frame bursts on a MPP channel at 5dB SNR:
 
 ![](doc/pre_post_amble_mpp.png)
 

octave/esno_est.m

@@ -1,7 +1,7 @@
 % esno_est.m
 % David Rowe Mar 2017
 %
-% Functions for esimating Es/No from QPSK symbols, and supporting tests
+% Functions for estimating Es/No from QPSK symbols, and supporting tests
 
 1;
 

octave/fdmdv.m

@@ -629,7 +629,7 @@ function snr_dB = calc_snr(f, sig_est, noise_est)
 endfunction
 
 
-% sets up test bits system.  make sure rand('state', 1) has just beed called
+% sets up test bits system.  make sure rand('state', 1) has just been called
 % so we generate the right test_bits pattern!
 
 function f = init_test_bits(f)

octave/ldpc.m

@@ -132,7 +132,7 @@ function [detected_data paritychecks] = ldpc_dec(code_param, max_iterations, ...
     
     input_decoder_c = bit_likelihood(1:(code_param.ldpc_coded_bits_per_frame-Nunused));
     
-    % insert "very likely" LLRs for unsed data bits (in 1's stuffing case)
+    % insert "very likely" LLRs for unused data bits (in 1's stuffing case)
     input_decoder_c = [input_decoder_c(1:code_param.data_bits_per_frame) ...
                        100*ones(1,Nunused) ...
                        input_decoder_c(code_param.data_bits_per_frame+1:end)];

octave/ofdm_rx.m

@@ -13,7 +13,7 @@
     
        ofdm_rx("test_datac0.raw","datac0","packetsperburst",1)
        
-    3. Burst mode, enable only postamble detecion:
+    3. Burst mode, enable only postamble detection:
     
        ofdm_rx("test_datac0.raw","datac0","packetsperburst",1, "postambletest")
 #}

src/codec2_fifo.c

@@ -6,7 +6,7 @@
 
   A FIFO design useful in gluing the FDMDV modem and codec together in
   integrated applications.  The unittest/tfifo indicates these
-  routines are thread safe without the need for syncronisation
+  routines are thread safe without the need for synchronisation
   object, e.g. a different thread can read and write to a fifo at the
   same time.
 

src/freedv_700.c

@@ -272,7 +272,7 @@ int freedv_comprx_700c(struct freedv *f, COMP demod_in_8kHz[]) {
     int rx_status = 0;
 
     // quisk_cfInterpDecim() modifies input data so lets make a copy just in case there
-    // is no sync and we need to echo inpout to output
+    // is no sync and we need to echo input to output
 
     // freedv_nin(f): input samples at Fs=8000 Hz
     // f->nin: input samples at Fs=7500 Hz

src/freedv_data_channel.c

@@ -36,7 +36,7 @@
 
 static unsigned char fdc_header_bcast[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 
-/* CCIT CRC table (0x1201 polynomal) */
+/* CCIT CRC table (0x1201 polynomail) */
 static unsigned short fdc_crc_table[256] = {
     0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
     0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
@@ -84,7 +84,7 @@ static unsigned short fdc_crc(unsigned char *buffer, size_t len)
     return crc ^ 0xffff;
 }
 
-/* CRC4 0x03 polynomal */
+/* CRC4 0x03 polynomial */
 static unsigned char fdc_crc4(unsigned char *buffer, size_t len)
 {
     unsigned char crc = 0x0f;

src/freedv_fsk.c

@@ -543,7 +543,7 @@ int freedv_rx_fsk_ldpc_data(struct freedv *f, COMP demod_in[]) {
 
             }
 
-            /* extract packet sequnce numbers optionally placed in byte[0] */
+            /* extract packet sequence numbers optionally placed in byte[0] */
             seq = 0;
             for(int i=0; i<8; i++)
                 seq |= f->rx_payload_bits[8+i] << (7-i);

src/fsk.c

@@ -281,7 +281,7 @@ void fsk_mod(struct FSK *fsk,float fsk_out[], uint8_t tx_bits[], int nbits) {
     COMP dph;                             /* phase shift of current bit */
     size_t i,j,m,bit_i,sym;
 
-    /* trap these parametrs being set to FSK_UNUSED, then calling mod */
+    /* trap these parameters being set to FSK_UNUSED, then calling mod */
     assert(f1_tx > 0);
     assert(tone_spacing > 0);
     
@@ -341,7 +341,7 @@ void fsk_mod_c(struct FSK *fsk,COMP fsk_out[], uint8_t tx_bits[], int nbits) {
     size_t i,j,bit_i,sym;
     int m;
     
-    /* trap these parametrs being set to FSK_UNUSED, then calling mod */
+    /* trap these parameters being set to FSK_UNUSED, then calling mod */
     assert(f1_tx > 0);
     assert(tone_spacing > 0);
 
@@ -397,7 +397,7 @@ void fsk_mod_ext_vco(struct FSK *fsk, float vco_out[], uint8_t tx_bits[], int nb
     int M = fsk->mode;
     int i, j, m, sym, bit_i;
     
-    /* trap these parametrs being set to FSK_UNUSED, then calling mod */
+    /* trap these parameters being set to FSK_UNUSED, then calling mod */
     assert(f1_tx > 0);
     assert(tone_spacing > 0);
 

src/lpc.c

@@ -42,7 +42,7 @@
 
   Pre-emphasise (high pass filter with zero close to 0 Hz) a frame of
   speech samples.  Helps reduce dynamic range of LPC spectrum, giving
-  greater weight and hense a better match to low energy formants.
+  greater weight and hence a better match to low energy formants.
 
   Should be balanced by de-emphasis of the output speech.
 

src/mbest.c

@@ -131,7 +131,7 @@ void mbest_search(
 {
     int j;
 
-    /* note weighting can be applied externally by modifiying cb[] and vec:
+    /* note weighting can be applied externally by modifying cb[] and vec:
 
       float e = 0.0;
       for(i=0; i<k; i++)

src/mpdecode_core.c

@@ -38,7 +38,7 @@ static COMP S_matrix[] = {
 
 // c_nodes will be an array of NumberParityBits of struct c_node
 // Each c_node contains an array of <degree> c_sub_node elements
-// This structure reduces the indexing caluclations in SumProduct()
+// This structure reduces the indexing calclations in SumProduct()
 
 struct c_sub_node { // Order is important here to keep total size small.
   uint16_t index;   // Values from H_rows (except last 2 entries)

stm32/src/stm32f4_dac.c

@@ -188,7 +188,7 @@ static void dac1_config(void)
   /*
      This line fixed a bug that cost me 5 days, bad wave amplitude
      value, and some STM32F4 periph library bugs caused triangle wave
-     geneartion to be enable resulting in a low level tone on the
+     generation to be enable resulting in a low level tone on the
      SM1000, that we thought was caused by analog issues like layour
      or power supply biasing
   */

stm32/usb_lib/otg/usb_dcd.c

@@ -103,7 +103,7 @@ void DCD_Init(USB_OTG_CORE_HANDLE *pdev ,
     ep->is_in = 1;
     ep->num = i;
     ep->tx_fifo_num = i;
-    /* Control until ep is actvated */
+    /* Control until ep is activated */
     ep->type = EP_TYPE_CTRL;
     ep->maxpacket =  USB_OTG_MAX_EP0_SIZE;
     ep->xfer_buff = 0;