ArrayArrayArrayArrayArrayArrayArrayArrayArray BrainModular BrainModular Users Forum 2017-07-01T00:24:08+02:00 https://www.brainmodular.org/forums/app.php/feed/topic/5770 2017-07-01T00:24:08+02:00 2017-07-01T00:24:08+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37230#p37230 <![CDATA[store array module]]>

Statistics: Posted by 23fx23 — 01 Jul 2017, 00:24

]]> 2017-06-30T23:38:55+02:00 2017-06-30T23:38:55+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37229#p37229 <![CDATA[store array module]]> I did the tricks on your first post.
put 8 array outputs so I can scan the memory slots differently for each of my 8 loudspeakers.

File uploaded: http://www.sensomusic.com/forums/upload ... ray_V1.zip

tell me if your on OSX.

Statistics: Posted by oli_lab — 30 Jun 2017, 23:38

]]> 2017-06-30T23:19:41+02:00 2017-06-30T23:19:41+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37226#p37226 <![CDATA[store array module]]>
float mybuffer[128][1024]; // both are int representing X Y sizes for a float contening array. where here for ex 128 is your nb of 'slots' and 1024 nb of floats want in each slot.

Statistics: Posted by 23fx23 — 30 Jun 2017, 23:19

]]> 2017-06-30T22:15:20+02:00 2017-06-30T22:15:20+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37218#p37218 <![CDATA[store array module]]> how would you declare mybuffer[128][1024]; //128 slots, 1024 floats

as 128 is for int and 1024 is for floats. ?

Statistics: Posted by oli_lab — 30 Jun 2017, 22:15

]]> 2017-06-30T21:39:47+02:00 2017-06-30T21:39:47+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37216#p37216 <![CDATA[store array module]]> Statistics: Posted by 23fx23 — 30 Jun 2017, 21:39

]]> 2017-06-30T16:08:10+02:00 2017-06-30T16:08:10+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37199#p37199 <![CDATA[store array module]]> for conveniance i pers would do a bi-dimentional vector or array of nb_slots, nb_floats_per_slot, then let you set/get a slot.
for ex

mybuffer[128][1024]; //128 slots, 1024 floats

TPrecision* Out_Ptr; //pointer to float adress

Out_Ptr = sdkGetEvtDataAddr(pArrayOut); // get mem adress of output pin array

memcpy(Out_Ptr, &(mybuffer[5][0]), slot_bytes_size); //copy to output array the content starting at start mem adress of slot 5, of slot size.

Statistics: Posted by 23fx23 — 30 Jun 2017, 16:08

]]> 2017-06-30T16:03:21+02:00 2017-06-30T16:03:21+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37198#p37198 <![CDATA[store array module]]>
The next idea is to build wavetables from fft :
From an audio signal snap a fft every 10ms then resynthetise from the fft data on one period.
Put the waves each after the other in one big wavetable that can be scanned.
This way I can store a large amount of spectral data with fewer ram.

Statistics: Posted by oli_lab — 30 Jun 2017, 16:03

]]> 2017-06-30T15:14:40+02:00 2017-06-30T15:14:40+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37195#p37195 <![CDATA[store array module]]> float mybuffer[MAX_SIZE];

or you can use new in cpp but be careful to delete the array prior a new one at some point if multiple calls or ram use will increase
delete[] mybuffer; mybuffer = nullptr;

if want dynamic size i think it's better to use vector.
vector has a reserve size where you would put max size, and a resize function to dynamically alter its size without needing to recreate a new one.
vector.reserve(size); ie at init and vector.resize(newsize) in the code, ie getting length of your input buffer first
#include <vector>

std::vector<float> mybuffer;
mybuffer.reserve(MAX_SIZE);
mybuffer.resize(NEW_SIZE);

you can resize even without a reserve size set first, then it will find some freespace in ram and allocate, but internally the resizing will be more efficient if you had reserved first,
tho of course i assume the max_size is locked space in ram then.

no problem looping and setting to 0 each id, but if setting to 0 the whole array man can use memset:
memset(mybuffer, 0 , sizeof(float)*MAX_SIZE); or more simply memset(mybuffer, 0 , sizeof(mybuffer));

or assuming you know the MAX_SIZE, the bytes size is MAX_SIZE * 4 (4 bytes per float) so for a 1024 array its 4094 bytes
memset(mybuffer,0,4096);

Statistics: Posted by 23fx23 — 30 Jun 2017, 15:14

]]> 2017-06-29T17:07:26+02:00 2017-06-29T17:07:26+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37179#p37179 <![CDATA[store array module]]> so I build a store array module !

I did a

TPrecision* m_buffer;
and
int bufferSize = MAX_ARRAY_SIZE * SLOTNUMBER;
in .h

that init like this in .cpp:

storeArray::storeArray()
{
//Ensure that initial memo values at buffer are 0.0f
m_buffer = new float[bufferSize];
for (int i = 0; i<bufferSize; i++)
{
m_buffer = 0.0f;
}

so I have a buffer in which all the memory slots will be saved
for example, if I set 128 slots of 1024 bits there will be a fixed amount of memory that will be taken for this module.

- is it a problem ?

- is there another way to have the size been chosen from the size of the incoming array at input ?

thanx

Statistics: Posted by oli_lab — 29 Jun 2017, 17:07

]]> BrainModular BrainModular Users Forum 2017-07-01T00:24:08+02:00 https://www.brainmodular.org/forums/app.php/feed/topic/5770 2017-07-01T00:24:08+02:00 2017-07-01T00:24:08+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37230#p37230 <![CDATA[store array module]]>

Statistics: Posted by 23fx23 — 01 Jul 2017, 00:24

]]> 2017-06-30T23:38:55+02:00 2017-06-30T23:38:55+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37229#p37229 <![CDATA[store array module]]> I did the tricks on your first post.
put 8 array outputs so I can scan the memory slots differently for each of my 8 loudspeakers.

File uploaded: http://www.sensomusic.com/forums/upload ... ray_V1.zip

tell me if your on OSX.

Statistics: Posted by oli_lab — 30 Jun 2017, 23:38

]]> 2017-06-30T23:19:41+02:00 2017-06-30T23:19:41+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37226#p37226 <![CDATA[store array module]]>
float mybuffer[128][1024]; // both are int representing X Y sizes for a float contening array. where here for ex 128 is your nb of 'slots' and 1024 nb of floats want in each slot.

Statistics: Posted by 23fx23 — 30 Jun 2017, 23:19

]]> 2017-06-30T22:15:20+02:00 2017-06-30T22:15:20+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37218#p37218 <![CDATA[store array module]]> how would you declare mybuffer[128][1024]; //128 slots, 1024 floats

as 128 is for int and 1024 is for floats. ?

Statistics: Posted by oli_lab — 30 Jun 2017, 22:15

]]> 2017-06-30T21:39:47+02:00 2017-06-30T21:39:47+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37216#p37216 <![CDATA[store array module]]> Statistics: Posted by 23fx23 — 30 Jun 2017, 21:39

]]> 2017-06-30T16:08:10+02:00 2017-06-30T16:08:10+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37199#p37199 <![CDATA[store array module]]> for conveniance i pers would do a bi-dimentional vector or array of nb_slots, nb_floats_per_slot, then let you set/get a slot.
for ex

mybuffer[128][1024]; //128 slots, 1024 floats

TPrecision* Out_Ptr; //pointer to float adress

Out_Ptr = sdkGetEvtDataAddr(pArrayOut); // get mem adress of output pin array

memcpy(Out_Ptr, &(mybuffer[5][0]), slot_bytes_size); //copy to output array the content starting at start mem adress of slot 5, of slot size.

Statistics: Posted by 23fx23 — 30 Jun 2017, 16:08

]]> 2017-06-30T16:03:21+02:00 2017-06-30T16:03:21+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37198#p37198 <![CDATA[store array module]]>
The next idea is to build wavetables from fft :
From an audio signal snap a fft every 10ms then resynthetise from the fft data on one period.
Put the waves each after the other in one big wavetable that can be scanned.
This way I can store a large amount of spectral data with fewer ram.

Statistics: Posted by oli_lab — 30 Jun 2017, 16:03

]]> 2017-06-30T15:14:40+02:00 2017-06-30T15:14:40+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37195#p37195 <![CDATA[store array module]]> float mybuffer[MAX_SIZE];

or you can use new in cpp but be careful to delete the array prior a new one at some point if multiple calls or ram use will increase
delete[] mybuffer; mybuffer = nullptr;

if want dynamic size i think it's better to use vector.
vector has a reserve size where you would put max size, and a resize function to dynamically alter its size without needing to recreate a new one.
vector.reserve(size); ie at init and vector.resize(newsize) in the code, ie getting length of your input buffer first
#include <vector>

std::vector<float> mybuffer;
mybuffer.reserve(MAX_SIZE);
mybuffer.resize(NEW_SIZE);

you can resize even without a reserve size set first, then it will find some freespace in ram and allocate, but internally the resizing will be more efficient if you had reserved first,
tho of course i assume the max_size is locked space in ram then.

no problem looping and setting to 0 each id, but if setting to 0 the whole array man can use memset:
memset(mybuffer, 0 , sizeof(float)*MAX_SIZE); or more simply memset(mybuffer, 0 , sizeof(mybuffer));

or assuming you know the MAX_SIZE, the bytes size is MAX_SIZE * 4 (4 bytes per float) so for a 1024 array its 4094 bytes
memset(mybuffer,0,4096);

Statistics: Posted by 23fx23 — 30 Jun 2017, 15:14

]]> 2017-06-29T17:07:26+02:00 2017-06-29T17:07:26+02:00 https://www.brainmodular.org/forums/viewtopic.php?t=5770&p=37179#p37179 <![CDATA[store array module]]> so I build a store array module !

I did a

TPrecision* m_buffer;
and
int bufferSize = MAX_ARRAY_SIZE * SLOTNUMBER;
in .h

that init like this in .cpp:

storeArray::storeArray()
{
//Ensure that initial memo values at buffer are 0.0f
m_buffer = new float[bufferSize];
for (int i = 0; i<bufferSize; i++)
{
m_buffer = 0.0f;
}

so I have a buffer in which all the memory slots will be saved
for example, if I set 128 slots of 1024 bits there will be a fixed amount of memory that will be taken for this module.

- is it a problem ?

- is there another way to have the size been chosen from the size of the incoming array at input ?

thanx

Statistics: Posted by oli_lab — 29 Jun 2017, 17:07

]]>