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Project Title AI-Powered Audio Analysis Software for Sleep Respiratory Detection & Snoring Classification Project Description I am looking for an expert in Audio Signal Processing and Machine Learning to develop a specialized software tool for analyzing 8-hour sleep audio recordings. The system must process audio data to identify, categorize, and log specific respiratory events using provided training datasets. 1. Detection & Classification Requirements The software must accurately detect and quantify the following: • Normal Breathing: Total event count. • Labored Breathing: Total event count. • Snoring Intensity Levels: o Low Snoring: 10 – 30 dB o Moderate Snoring: 30 – 50 dB o Heavy Snoring: 50 – 80 dB o Explosive Snoring: > 80 dB • Apneic...

I need a matched transmitter-receiver pair built around a 200 kHz carrier that can cover at least 40 m in open air and recognise simple OOK (On-Off Keying) pulses reliably. The intended application is “Radio Frequency RF”, so there is no higher-level protocol to worry about; raw, clean carrier switching will do the job. Everything will be mounted and operated outdoors, so the design must tolerate ambient temperature swings, sunlight and occasional moisture without detuning or loss of sensitivity. Both TX and Rx are separate not transceiver and battery powered with minimum 2 days running time. What I am looking for • Circuit-level design of both the low-power transmitter and the super-regen/ super-het (designer’s choice) receiver, including complete schematics, PCB...

I need an interface connector for carrying sensor readings from Ultrasonic datalogger by Modbus cable RS-485 with a male connector. The PCB interface is to be built with a 6-pin military female connector at one end and printer cable connector at the other end that will be used to connect to a laptop USB port to download the data (Refer to picture attached). Requirements: - Use a female 6 pin military connector (standard adapter) for the military connector and a female print cable connector on the other end, with PCB in between - No custom cable is needed - Ensure compatibility with Modbus protocol - Encapsulate the PCB into aluminium pot or similar for robustness Ideal Skills and Experience: - Expertise in Modbus communication - Experience with military and printer cable connectors - ...

I need a complete high-frequency trading (HFT) strategy for actively-traded equities. The solution must be built around three data pillars that I already have in place: extensive historical tick data for back-testing, a low-latency real-time market feed for live decisions, and curated news feeds for event-driven signals. Your job is to transform these inputs into a production-ready strategy that can ingest the streams, react within microseconds, and handle the entire trade life-cycle—from signal generation through execution and risk checks—without human intervention. Deliverables • Strategy logic and mathematical model, fully documented • Back-test framework wired to my historical data, with reproducible results • Low-latency execution module that plugs...

I need a full on-site Wi-Fi survey carried out in a commercial building using an Ekahau Sidekick and the latest Ekahau software. The sole objective is to capture accurate signal-strength data throughout the premises so I can visualise coverage, spot dead zones, and back up any upgrade decisions with hard numbers. During each walkthrough please log not only RSSI values but any factors that could be degrading the signal. I am particularly mindful of three common culprits—electronic devices that radiate noise, structural obstacles such as reinforced walls or tinted glass, and neighbouring networks that may be crowding the same channels—so be sure these are annotated in the project file. At hand-off I expect: • The complete Ekahau project file (.esx) with all raw measureme...

Need help for two questions cadence spice simulation budget 30$ plz check the attachment

I am building a grid-tied solar inverter and need a seasoned embedded designer to deliver complete, production-ready firmware for both an STM32F103 and a TMS320F28035. The inverter must connect seamlessly to the grid, track maximum power from the panels, report its status remotely, and shut down safely if it detects islanding. To achieve this you will configure and optimise the following on the STM32: • ADC – fast sampling of panel and grid voltages/currents for control loops • PWM – generation of high-resolution switching signals for the full-bridge stage • UART – bidirectional link for remote monitoring, logging and field updates On the TMS320 you will implement the high-speed control algorithms (MPPT, PLL, anti-islanding logic, grid-synchronis...

I have a Python script that controls an antenna array and performs object detection with a basic Hamming-windowed FFT. While it works, the range resolution is still too coarse for my needs. I began experimenting with the MUSIC algorithm and even toyed with the idea of adding a continual-learning loop, but I would like a cleaner, expertly implemented solution—whether that is MUSIC, ESPRIT, a refined windowing strategy, or any other modern signal-processing method you can justify. Here is the current landscape: • Language & stack: Python with NumPy, SciPy and Matplotlib. • Key variable: signal-processing methods drive the entire detection chain, so any change must integrate cleanly with the existing pipeline. • Desired outcome: a measurable, demonstrable improve...

Our client runs a call center with Nigerian agents calling US businesses. They need a Python script that makes the agents' accent sound more neutral and clear to American ears in real time during live phone calls. The hard part is already done. There is a fully built Node.js server that handles the live call audio. We just need you to write one Python script that plugs into it. What the script needs to do: Receive live audio from the server, process it through a voice conversion model to soften the Nigerian accent, and send the processed audio back. The whole process must happen in under 150ms so the conversation feels natural with no delay. Tech details: Audio comes in as mulaw 8kHz chunks. You can resample internally for better model performance then convert back before sending ...

Project Title: ESP32-Based Smart Healthcare Monitoring Device PCB I need a custom PCB design for a portable patient health monitoring system. Main Controller: * ESP32 Dev Module (30-pin) Power System: * 18650 Li-ion battery * TP4056 charging module with protection * MT3608 boost converter (output 5V) * On/off power switch * USB charging port (Type-C or Micro-USB) * Proper power routing for stable 5V and 3.3V Sensors: * MAX30102 (Heart Rate + SpO2) using I2C * SDA → GPIO21 * SCL → GPIO22 * DS18B20 Temperature Sensor * DATA → GPIO4 with 4.7kΩ pull-up resistor Display: * 2.8” or 3.5” TFT Touch Display (ILI9341 + XPT2046) * SPI pins: * MOSI → GPIO23 * MISO → GPIO19 * SCK → GPIO18 * Control pins: * TFT_CS → GPIO5 ...

I need a microcontroller-based motor controller for a BLDC motor using Field-Oriented Control (FOC). The system should incorporate encoders as sensors. Key requirements: - Control a BLDC motor - Implement FOC - Utilize encoders for feedback Ideal skills and experience: - Expertise in FOC and motor control - Experience with encoders and microcontroller programming - Background in embedded systems and electronics Please provide relevant work experience in your bids.

I already own the gear for my new show—Shure dynamic microphones and a pair of small-format mixers—but I need everything wired, gain-staged, and ready to record. The job is straightforward: assemble the signal chain, dial in healthy levels on the mixers, eliminate any hum or hiss, and run a quick test recording so I know the rig is solid before my first episode. You will be working only with the hardware; the recording software is installed and will be launched just for monitoring and a short capture check. I’ll have all cables, stands, shock mounts, and pop filters on hand. Deliverable • Fully connected microphone-to-mixer setup, labelled and tidy • Channels balanced, EQ and basic compression set for spoken-word clarity • One clean, clipped-...

I’m ready to commission a complete options-and-futures trading system that runs from AmiBroker (AFL) or an equally robust environment and fires orders automatically through the broker’s API. The core requirement is end-to-end automation: data ingestion, signal generation, strike-price selection, and live order execution for both call and put positions. What I need you to build • A rule-based strategy geared toward high-probability swing trades. • Dynamic strike selection driven by option Greeks (Delta, Vega, Gamma, Beta), Open Interest, and supporting indicators you find statistically significant. • AFL code (or alternative language you propose) that seamlessly connects to the broker’s API and sends/monitors orders without manual intervention. •...

I’m developing a commercial product that relies on a set of interactive elements—speakers, sensors, and LED displays—and I need clean, production-ready schematic diagrams that tie them all together. The core of the job is translating my functional requirements into well-documented circuitry that in-house team can follow without second-guessing pinouts, signal paths or power budgets. This is an interactive piano that plays audio files. You’re free to work in whichever design environment you’re most comfortable with—Altium, KiCad, Eagle, OrCAD, or any other professional tool—as long as the resulting files can be shared in their native format plus PDFs for quick reference. What I expect from you: • A complete, logically organised schematic sho...

I need a wearable wristband designed to detect fatigue and sleepiness by monitoring heart rate. Essential Features: - Heart Rate Monitoring: Accurately track user's heartbeat. - Vibration Alerts: Notify users when fatigue is detected. - Sleep Tracking: Monitor sleep patterns and quality. Ideal Skills and Experience: - Experience in wearable device development - Expertise in biometric sensors, particularly heart rate - Proficient in vibration alert systems - Background in sleep pattern analysis Looking for a skilled developer to bring this concept to life.

I want a MATLAB-based system-level simulator that models Conditional Handover as well as L1/L2-triggered mobility in an integrated 5G terrestrial and satellite network. The sole purpose is performance analysis, so every module needs to expose parameters that let me compare handover success rate, latency, and throughput across a variety of mobility scenarios. The framework should let me define heterogeneous cells (gNBs and satellite beams), user mobility paths, channel conditions, and decision thresholds for conditional handover. Results must be traceable: at the end of each run I should receive time-stamped logs of mobility events together with aggregated KPIs and visual plots produced directly from MATLAB. Key functional points to cover • Support both 5G NR radio links and a repr...

I’m preparing an electrical simulation in XSim and could use an experienced hand to get everything running smoothly. The immediate goal is to build and validate an audio-amplifier circuit, but I’m hitting a few snags while configuring the project and debugging unexpected behaviour in the tool. Here’s what I need from you: • Walk me through the full simulation setup in XSim—component selection, net-list creation, stimulus definition and any must-have parameter tweaks for audio work. • Identify and resolve the software glitches or warning messages that keep interrupting my runs. • Share practical tips on result interpretation so I can quickly spot distortion, gain issues or stability problems in the amplifier stage. We’ll collaborate live i...

I’m building a proof-of-concept that can drive about fifteen miniature coils with freely programmable electromagnetic bursts. The first milestone is to settle on the most suitable microcontroller platform—Teensy 4.1 looks promising, yet I’m open to any alternative that offers comparable speed and I/O while keeping component procurement inexpensive here in Shenzhen. Cost-effectiveness, especially in sourcing parts locally, is my top priority, so I’d like your guidance on picking chips, drivers, and passive components that are abundant in Huaqiangbei and similar markets. Once the hardware is defined, I need firmware that lets each coil receive independent, highly variable waveforms (adjustable amplitude, frequency, duty-cycle, and pulse trains). A companion PC or t...

I am an MTech student working on a project related to quantitative detection of wire rope defects using Magnetic Flux Leakage (MFL). I have a reference IEEE/NDT paper and I want to replicate the simulation results using ANSYS Maxwell 3D. Scope of work: * Build 3D geometry of steel wire rope (multi-wire or simplified cylinder model) * Assign materials (steel, air, permanent magnets) * Setup magnetic excitation using permanent magnets / coil * Place Hall sensor array correctly * Implement defect modeling (surface and internal defects) * Perform magnetostatic simulation * Extract magnetic flux leakage signals (Mh, Sw, Sh) * Help match simulation trends with the reference paper Requirements: * Strong experience in ANSYS Maxwell 3D (Electromagnetics) * Experience with Magnetic Flux Leakage...

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