esbiko.com
Esbiko is an interactive science simulation platform for students and teachers. Explore virtual physics labs, earth science simulations, astronomy activities, and STEM experiments online.
First seen 2026-11-05 · Last seen 2026-11-05 · Source: webmcp.com
Answer 3 · Act 8 · Transact 0 · Score: Not yet scored
Tool inspector
create_doppler_video
Create a 10–60 second 9:16 WebM Doppler video with deterministic motion, recorded sound, wavefronts, captions, and before/after pitch. Use single_pass for one source that crosses the observer halfway through the video; use two_vehicle for the two-source story. Silent files are rejected.
Page: /experiments/physics.acoustics.doppler/run
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
storyMode |
string | no | single_pass uses one left-to-right source for the whole video; two_vehicle uses two sequential sources. |
durationSeconds |
number | no | Total video duration. In single_pass, the observer crossing occurs exactly halfway through. |
speedMps |
number | no | — |
emittedFrequencyHz |
number | no | — |
firstInstrument |
string | no | Recorded sound for the first source, or the only source in single_pass mode. |
secondInstrument |
string | no | Recorded sound for the second source in two_vehicle mode. |
Raw JSON schema
{
"type": "object",
"properties": {
"storyMode": {
"type": "string",
"enum": [
"two_vehicle",
"single_pass"
],
"default": "two_vehicle",
"description": "single_pass uses one left-to-right source for the whole video; two_vehicle uses two sequential sources."
},
"durationSeconds": {
"type": "number",
"minimum": 10,
"maximum": 60,
"default": 30,
"description": "Total video duration. In single_pass, the observer crossing occurs exactly halfway through."
},
"speedMps": {
"type": "number",
"minimum": 10,
"maximum": 60,
"default": 60
},
"emittedFrequencyHz": {
"type": "number",
"minimum": 100,
"maximum": 1000,
"default": 440
},
"firstInstrument": {
"type": "string",
"enum": [
"car_engine",
"diesel_engine",
"bus_engine",
"tractor_engine",
"ambulance_siren",
"police_siren",
"esbiko_voice"
],
"default": "esbiko_voice",
"description": "Recorded sound for the first source, or the only source in single_pass mode."
},
"secondInstrument": {
"type": "string",
"enum": [
"car_engine",
"diesel_engine",
"bus_engine",
"tractor_engine",
"ambulance_siren",
"police_siren",
"esbiko_voice"
],
"default": "ambulance_siren",
"description": "Recorded sound for the second source in two_vehicle mode."
}
},
"additionalProperties": false
}
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