Matrix Vocoder vs talkback.se
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Matrix Vocoder
Transform your voice into an electronic instrument with this app, simulating classic analog vocoder sounds. It analyzes input signals, performs spectral analysis, and reassembles synthetic speech using filter banks and replacement signals.
- 32 channel filterbank with analog filters
- Stereophonic synthesis with alias-free oscillators
- External carrier input
- Voiced/Unvoiced detection and pitch tracking
- Formant shift
- Patchbay for channel connection
- 16 internal oscillators for choir sounds
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Matrix Vocoder transforms your voice into an electronic instrument! The Vocoder was invented by Homer Dudley in the mid-30's of the last century. Dudley worked at Bell Laboratories, and this is where the first Vocoder took shape. The Matrix Vocoder is designed to properly simulate the classic analog Vocoder sound made famous e.g. by the music of the german band Kraftwerk. At there last world tour they used in fact the PC version of our Matrix Vocoder on stage ! The epic Cylon Robot voice is The basic function of a Vocoder is characterised by an analysis of the input signal, usually speech but other type of inputs can also be very interesting. In a special filter bank, a spectral analysis is performed and signals are developed which follows the amount of spectral energy in each channel. Another part of the analyser tests if there are unvoiced or voiced sounds at any particular time and extracts the pitch of the voiced sounds. The output section of the vocoder consists of a stereophonic synthesis filter bank which assembles the new synthetic speech from the characteristic filter envelopes from the analysis stage together with an external or internal replacement signal. - 32 channel Filterbank with 8-pole Butterworth analog filters - Stereophonic synthesis with analog modelled alias free oscillators. - External carrier possible ( left channel = voice / right channel = carrier ) - Voiced/Unvoiced detection - Pitch tracking - Formant shift - Matrix uses patchbay to connect analysis and synthesis channels. - Pan position and level for each channel. - 16 internal oscillators with unlimited voices for choir like sounds. - Stereo wide panorama parameter for internal generator. - Optional monophonic generator with Glide setting. - Internal noise generator. - Effect AudioUnit and Music Effect AudioUnit - stand alone / Audiobus 3 / IAA
talkback.se
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talkback.se is where a mix gets settled. This is its app: everything you were doing at the desk, carried out to the sofa, the bus and the car. ONE CLOCK, EVERY VERSION A and B and C play on the same clock and only one of them is audible. Switching is a gain change, not a seek, so the comparison happens mid bar with no gap and no restart. That is the whole point of the thing, and it is what makes the difference between two mixes obvious in two seconds rather than two minutes. THE WHOLE RECORD, IN ORDER Album projects play through in sequence, with the levels exactly as they sit. Transitions plays only the seams, the last seconds of one song into the first of the next, with the CD gap if you want it, so you can hear a running order rather than imagine it. SAY IT AT THE SECOND IT HAPPENS Comments carry a timestamp. Tap one and you are at that moment in that version. Reply, react, and edit what you wrote. The conversation is the same one as on the website, live, not a copy, and new comments are marked as new. WHERE EVERY VERDICT STANDS Each version wears its verdict, approved or not, so you can see what has been settled and what is still open before you put the phone down. The final yes is given on the website, on real speakers. SHARE WITHOUT LOSING THE REINS Make a link from the phone and decide what it allows: comment, approve, download, an expiry date, a password, or just the one song. Existing links are listed with what they have seen. IN THE CAR CarPlay shows your projects and song
Screenshots
Verdict
The clearest difference is price: talkback.se at Free against Matrix Vocoder's $5.99. talkback.se also leads on update cadence (every 10 days vs every 15 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
talkback.se is free to download; Matrix Vocoder costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Matrix Vocoder ships an update every 15 months, talkback.se every 10 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.
| Parameter | Matrix Vocoder | talkback.se |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 4.2 (19 ratings) — better | — |
| Positive reviews | 41.7% of reviews | — |
| Number of ratings | 19 — better | — |
| Update frequency | Every 15 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Harry Gohs | I/O Music |
In-app purchases
Matrix Vocoder
No in-app purchases
talkback.se
No in-app purchases









