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Just Evan

Hello. Is it possible to make a device that removes parts of an audio clip containing silence?  

I think need to load the audio into buffer~ --> peek~ find indexes below the volume threshold...

Also how can I get the index intervals between silence and signal something like: Signal -- Silence_A -- Silence_B -- Signal, where Silence_A is the entry point into silence and Silence_B is the exit point before a new signal appears and so on in a circle until the clip ends?

Hello. Is it possible to make a device that removes parts of an audio clip containing silence?  

I think need to load the audio into...

removing-parts-of-an-audio-clip-containing-silence-strip-silence

Removing parts of an audio clip containing silence (Strip Silence)

Hello! I would like to understand how JS Painter works, maybe someone can give me some hints?

To begin with, I would just like to understand how I can round each corner [panel] individually, but I don’t really understand where to start. 

It seems like a pretty simple task, but after looking at a few examples on the Internet, it seems like i need to write a ton of code to do it... Although I still think that's not the case.

Hello! I would like to understand how JS Painter works, maybe someone can give me some hints?

To begin with, I would just like to...

js-painter-or-object-styles

JS Painter | Object Styles

Hello. How can I shorten a message to a certain number of characters?

I need a length of 20 characters, followed by an "..." ellipsis.

"AtlasLoop_3_clap_126 [2024-09-18 040840].wav"

I think there is some kind of object that will do this quite simply )

Hello. How can I shorten a message to a certain number of characters?

I need a length of 20 characters, followed by an "..."...

file-name-abbreviation

File name abbreviation

Domenico Di Giosa

Hi, beginner here... Is there any chanche to have a umenu which is autopopulated and updated by adding/removing items to the playlist object? 

Hi, beginner here... Is there any chanche to have a umenu which is autopopulated and updated by adding/removing items to the playlist...

get-umenu-populated-by-playlist

get umenu populated by playlist~

Emmett Palaima

Hi, I'd like to know if there are any operators I can use to precisely set and compare the bit values of a 32-bit floating point audio signal. 

Something that would set bits 0-32 to 0 or 1, and could check whether bits 0-32 are 0 or 1. 

Is there anything like this in gen or within the audio objects?

Is there any workaround that could accomplish precisely setting and comparing bits?

Hi, I'd like to know if there are any operators I can use to precisely set and compare the bit values of a 32-bit floating point audio...

bitwise-operators-on-floating-point-signal

Bitwise Operators on Floating Point Signal

Marin Gauthier

I'm a young composer who is starting a project based on the bicycle and the mind of the athlete. I'm currently trying to connect my Tacx Neo to Max for live in order to controller different parameters of a track by pedaling fast/slow, soft/hard etc... These things are all being picked up by the trainer but i'm trying to find a way to send that data to max and assign it to parameters of a track such as distortion or time stretch or something. 

Thing is the trainer connects via Bluetooth on apps such as zwift and  the Garmin training app but not the bluetooth settings of my pc, so objects like HI "human interface" don't recognize the trainer. 

Does anyone have any ideas? How could I pick up the data from the trainer and assign it via Max for live?

Hello hello!

I'm a young composer who is starting a project based on the bicycle and the mind of the athlete. I'm currently trying to...

connectin-a-tacx-bicycle-trainer-to-max

Connectin a Tacx bicycle trainer to Max

Darling Lee

    I intend to develop an external object using the C language. Below is my source code. The problem is that the compiled object cannot receive audio signals through the inlet. Why is that? How should I modify my source code?Thanks!

#include "ext.h"
#include "ext_obex.h"
#include "z_dsp.h"
#include <math.h>
#include <stdlib.h>
#include <fftw3.h>

#define MAX_PEAK_COUNT 24
#define BUFFER_SIZE_OPTIONS {512, 1024, 2048, 4096}

// Spectrum peak structure
typedef struct {
    float frequency;
    float amplitude;
    float Q;
} Peak;

typedef struct _fpeaksm {
    t_pxobject ob;          
    double *buffer;         // Signal buffer
    fftw_complex *fft_output; // FFT output
    long buffer_size;       // Buffer size
    long peak_count;        // Number of spectrum peaks
    long buffer_index;      // Buffer index
    t_atom *output_atoms;   // Output data
    void *outlet;           // Max/MSP outlet
    fftw_plan fft_plan;     // FFT plan
    float threshold;        // Threshold
} t_fpeaksm;

t_class *fpeaksm_class; // Class pointer

void *fpeaksm_new(t_symbol *s, long argc, t_atom *argv);
void fpeaksm_free(t_fpeaksm *x);
void fpeaksm_assist(t_fpeaksm *x, void *b, long m, long a, char *s);
void fpeaksm_dsp(t_fpeaksm *x, t_signal **sp, short *count);
void fpeaksm_perform64(t_fpeaksm *x, t_object *output, double **ins, long n, long flags, void *userparam);
void analyze_peaks(t_fpeaksm *x);
void output_peaks(t_fpeaksm *x, Peak *peaks, long count);
void fpeaksm_size(t_fpeaksm *x, long size);
void fpeaksm_peak(t_fpeaksm *x, long count);
void fpeaksm_threshold(t_fpeaksm *x, float threshold); // New threshold processing function

void ext_main(void *r) {
    fpeaksm_class = class_new("fpeaksm~", (method)fpeaksm_new, (method)fpeaksm_free, sizeof(t_fpeaksm), 0L, A_GIMME, 0);
    
    // Define attributes
    CLASS_ATTR_LONG(fpeaksm_class, "size", 0, t_fpeaksm, buffer_size);
    CLASS_ATTR_LONG(fpeaksm_class, "peak", 0, t_fpeaksm, peak_count);
    CLASS_ATTR_FLOAT(fpeaksm_class, "threshold", 0, t_fpeaksm, threshold); // New threshold attribute

    // Default values for attributes
    CLASS_ATTR_DEFAULT(fpeaksm_class, "size", 0, "1024");
    CLASS_ATTR_DEFAULT(fpeaksm_class, "peak", 0, "12");
    CLASS_ATTR_DEFAULT(fpeaksm_class, "threshold", 0, "0.01"); // Default value for threshold

    // Add methods
    class_addmethod(fpeaksm_class, (method)fpeaksm_dsp, "dsp", A_CANT, 0);
    class_addmethod(fpeaksm_class, (method)fpeaksm_assist, "assist", A_CANT, 0);
    class_addmethod(fpeaksm_class, (method)fpeaksm_size, "size", A_LONG, 0);
    class_addmethod(fpeaksm_class, (method)fpeaksm_peak, "peak", A_LONG, 0);
    class_addmethod(fpeaksm_class, (method)fpeaksm_threshold, "threshold", A_FLOAT, 0); // New method for threshold processing

    class_register(CLASS_BOX, fpeaksm_class);
}

void *fpeaksm_new(t_symbol *s, long argc, t_atom *argv) {
    t_fpeaksm *x = (t_fpeaksm *)object_alloc(fpeaksm_class);

    // Call dsp_setup to inform Max that this object has 1 audio signal inlet
    dsp_setup((t_pxobject *)x, 1);  // 1 indicates there is 1 signal input inlet

    x->buffer_size = 1024; // Default buffer size
    x->peak_count = 12;    // Default peak count
    x->threshold = 0.01;   // Default threshold

    // Parse command line arguments
    for (long i = 0; i < argc; i++) {
        if (atom_gettype(argv + i) == A_LONG) {
            if (i == 0) x->buffer_size = atom_getlong(argv + i);
            if (i == 1) x->peak_count = atom_getlong(argv + i);
        } else if (atom_gettype(argv + i) == A_FLOAT) {
            if (i == 2) x->threshold = atom_getfloat(argv + i);
        }
    }

    // Ensure buffer_size and peak_count are valid
    long valid_sizes[] = BUFFER_SIZE_OPTIONS;
    for (long i = 0; i < sizeof(valid_sizes) / sizeof(long); i++) {
        if (x->buffer_size == valid_sizes[i]) break;
        if (i == sizeof(valid_sizes) / sizeof(long) - 1) {
            x->buffer_size = 1024; // Set to default value
        }
    }

    x->peak_count = x->peak_count < 1 ? 1 : (x->peak_count > MAX_PEAK_COUNT ? MAX_PEAK_COUNT : x->peak_count);
    
    // Create FFT plan
    x->buffer = (double *)malloc(x->buffer_size * sizeof(double));
    x->fft_output = (fftw_complex *)malloc(x->buffer_size * sizeof(fftw_complex));
    x->output_atoms = (t_atom *)malloc(x->peak_count * 3 * sizeof(t_atom)); // 3 parameters for each peak
    x->fft_plan = fftw_plan_dft_r2c_1d(x->buffer_size, x->buffer, x->fft_output, FFTW_ESTIMATE);

    // Create outlet
    x->outlet = outlet_new(&x->ob, NULL);

    return (x);
}

void fpeaksm_free(t_fpeaksm *x) {
    dsp_free((t_pxobject *)x);  // Free DSP resources
    fftw_destroy_plan(x->fft_plan);  // Destroy FFT plan
    free(x->buffer);  // Free buffer
    free(x->fft_output);  // Free FFT output
    free(x->output_atoms);  // Free output data
}

void fpeaksm_assist(t_fpeaksm *x, void *b, long m, long a, char *s) {
    if (m == ASSIST_INLET) {
        sprintf(s, "Audio Input / Control Messages (size, peak, threshold)");
    } else {
        sprintf(s, "Output Peaks Data");
    }
}

void fpeaksm_dsp(t_fpeaksm *x, t_signal **sp, short *count) {
    dsp_add64((t_object *)x, (t_object *)x, (t_perfroutine64)fpeaksm_perform64, 0, NULL);
}

void fpeaksm_perform64(t_fpeaksm *x, t_object *dsp64, double **ins, long sampleframes, long flags, void *userparam) {
    double *in = ins[0];  // Get audio input signal

    for (long i = 0; i < sampleframes; i++) {
        x->buffer[x->buffer_index++] = in[i];  // Write signal to buffer

        // If buffer is full, perform FFT
        if (x->buffer_index >= x->buffer_size) {
            x->buffer_index = 0;  // Reset buffer index
            fftw_execute(x->fft_plan);  // Execute FFT
            analyze_peaks(x);  // Analyze peaks and output
        }
    }
}

void fpeaksm_size(t_fpeaksm *x, long size) {
    // Set buffer size
    if (size == 512 || size == 1024 || size == 2048 || size == 4096) {
        x->buffer_size = size;
        // Re-plan FFT plan
        x->fft_plan = fftw_plan_dft_r2c_1d(x->buffer_size, x->buffer, x->fft_output, FFTW_ESTIMATE);
    }
}

void fpeaksm_peak(t_fpeaksm *x, long count) {
    // Set peak count
    if (count >= 1 && count <= MAX_PEAK_COUNT) {
        x->peak_count = count;
    }
}

void fpeaksm_threshold(t_fpeaksm *x, float threshold) {
    // Set threshold
    x->threshold = threshold;
}

void analyze_peaks(t_fpeaksm *x) {
    Peak peaks[MAX_PEAK_COUNT];
    long peak_count = 0;

    // Process spectrum data
    for (long i = 0; i < x->buffer_size / 2; i++) {
        float amplitude = sqrt(x->fft_output[i][0] * x->fft_output[i][0] + x->fft_output[i][1] * x->fft_output[i][1]); // Calculate amplitude
        if (amplitude > x->threshold) { // Use threshold for detection
            float frequency = (float)i * (44100.0 / x->buffer_size); // Assume sampling rate is 44100
            float Q = frequency / (amplitude + 1e-5);  // Calculate Q value
            if (peak_count < x->peak_count) {
                peaks[peak_count++] = (Peak){frequency, amplitude, Q};
            } else {
                // Replace lowest amplitude peak
                for (long j = 0; j < peak_count; j++) {
                    if (amplitude > peaks[j].amplitude) {
                        peaks[j] = (Peak){frequency, amplitude, Q};
                        break;
                    }
                }
            }
        }
    }

    // Output results
    output_peaks(x, peaks, peak_count);
}

void output_peaks(t_fpeaksm *x, Peak *peaks, long count) {
    // Sort by frequency
    for (long i = 0; i < count - 1; i++) {
        for (long j = i + 1; j < count; j++) {
            if (peaks[i].frequency > peaks[j].frequency) {
                Peak temp = peaks[i];
                peaks[i] = peaks[j];
                peaks[j] = temp;
            }
        }
    }

    // Prepare output
    long output_size = count * 3;
    for (long i = 0; i < count; i++) {
        atom_setfloat(&x->output_atoms[i * 3], peaks[i].frequency);
        atom_setfloat(&x->output_atoms[i * 3 + 1], peaks[i].amplitude);
        atom_setfloat(&x->output_atoms[i * 3 + 2], peaks[i].Q);
    }

    // Output to outlet
    outlet_list(x->outlet, NULL, output_size, x->output_atoms);
}

    I intend to develop an external object using the C language. Below is my source code. The problem is that the compiled object cannot...

i-would-like-to-ask-everyone-about-an-issue-regarding-msp-external-object-development

I would like to ask everyone about an issue regarding MSP~ external object development

Philippe Moënne-Loccoz

L'affichage de mes images sur un deuxième écran en 1920X1080 fait apparaître un espace vertical manquant, comme si l'image n'était pas au bon format. Le patch fonctionnait bien avant les deux dernières mises à jour de MAX (OSX 13.6.1, MAX 8.6.4).  Même problème avec MAX 8.6.2.

Il fonctionne parfaitement sur mon autre MAC avec MAX 8.2.1 et OSX 10.14.6.

J'essaie de modifier le patch mais rien ne change, la seule solution (pas idéale) est de rendre noir le fond d'écran, ce qui masque cette absence d'image verticale. Quelqu'un à une idée sur ce pb et comment le résoudre svp? merci

Screen is not correct on 1920X1080  (OSX 13.6.1, MAX 8.6.4), vertical format is not ok.

test with 8.5.2 and all is correct ! Bug on 8.6 and later , please see this problem.

L'affichage de mes images sur un deuxième écran en 1920X1080 fait apparaître un espace vertical manquant, comme si l'image n'était pas au...

affichage-defaillant-avec-jitter

affichage défaillant (PB) avec jitter (in french)

Future_Lab

I'm trying to figure out a way to send data from Excel (or Google Sheets) to MaxMSP in order to trigger some audio. 

Essentially it just needs to send a file name to Max so I'm wondering of a hyperlink might be a simple way to do this? 

The reason I'm wondering about hyperlinks is the file names are somewhat dynamic. 

Files can be added or names can changed so that's why I'd rather not go the csv/ coll route since there's a formula for making links in Excel and it would be nice not to have to export a new csv every time changes are made. 

Hi, 

I'm trying to figure out a way to send data from Excel (or Google Sheets) to MaxMSP in order to trigger some audio. 

Essentially it...

hyperlink-data-from-excel-to-maxmsp

Hyperlink data from Excel to MaxMSP

matteo massimiliani

I am aware this is possible (My teacher showed me couple months ago) but cannot remember how, plus I've looked everywhere for the answer and I could not find it.

I am trying to achieve the following thing: I would like to add any patch I make to the object search (pressing "n") just like the Yellow Objects from externals. I know It's probably simple but I cannot figure it out.

Hello fellas,

I am aware this is possible (My teacher showed me couple months ago) but cannot remember how, plus I've looked everywhere...

Misc Forum