Kubke Lab:Research/ABR/Notebook/2013/11/05
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 Hearing development in barn owls
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General Entries
Personal EntriesFabiana
Andy says it is an intel file - over skype trying to figure out the structure so we can read it - extracting info from abr.h and abr_4_mac.c AndyFollowing file is from the ABR.H header file that was used for the original files. File layout is probably: <Master_Header><Sub_Structure><1000 2-byte INT><Sub_Structure><1000 2-byte INT> ... This structure needs to be confirmed.
{
short freq; /* frequency in Hz */
short amp; /* amplitude in D/A units */
short dur; /* duration in clock ticks */
short rise_fall; /* rise_fall in clock ticks */
} SIGNAL; // 8 bytes
typedef struct {
SIGNAL carrier;
SIGNAL envelope;
} STIMULUS;
typedef struct {
short left_delay; /* microseconds to left onset */
short right_delay; /* microseconds to right onset */
short rep_shorterval; /* interval in millseconds */
} TIMING; //6 bytes
typedef struct {
short clock; /* clock frequency in kHz */
short max_size; /* maximum size of each array */
short channels; /* 1 for carrier only, 2 for carrier & envelope */
} DA_INFO; //6 bytes
typedef struct {
short clock; /* in kHz */
short size; /* number of elements (per channel) */
short channels; /* number of channels */
short avg_reps; /* number of reps making up the average */
} AD_INFO; //8 bytes
typedef struct {
char date[12];
char time[12];
char owl_id[12];
char exp_id[12];
char comments[80];
short depth;
short version;
char side;
short num_chan;
short num_tests;
short gain;
char extra_room[1024-(12+12+12+12+80+2+2+1+2+2+2)];/* Add two more to correct CHAR */
// char extra_room[1024-(12+12+12+12+80+2+2+1)];/* Add two more to correct CHAR */ } HEADER_INFO, EXPERIMENT_HEADER; // Bytes 1024 typedef struct /**** THE MASTER STRUCTURE ****/ {
HEADER_INFO header; //1024
STIMULUS left; // 16
STIMULUS right; // 16
TIMING delay; // 6
DA_INFO output; // 6
AD_INFO input; // 8
} EXPERIMENT; // 1076 bytes
{
STIMULUS left; // 16
STIMULUS right; // 16
TIMING delay; // 6
DA_INFO output; // 6
AD_INFO input; // 8
} EXPERIMENT_INFO; // 52 bytes
Oris
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