real-time processing

  • NVIDIA’s Nemotron Speech ASR: Low-Latency Transcription


    NVIDIA AI Released Nemotron Speech ASR: A New Open Source Transcription Model Designed from the Ground Up for Low-Latency Use Cases like Voice AgentsNVIDIA has introduced Nemotron Speech ASR, an open-source streaming transcription model designed for low-latency applications like voice agents and live captioning. Utilizing a cache-aware FastConformer encoder and RNNT decoder, the model processes 16 kHz mono audio with configurable chunk sizes ranging from 80 ms to 1.12 s, allowing developers to balance latency and accuracy without retraining. This innovative approach avoids overlapping window recomputation, enhancing concurrency and efficiency on modern NVIDIA GPUs. With a word error rate (WER) between 7.16% and 7.84% across various benchmarks, Nemotron Speech ASR offers a scalable solution for real-time speech applications. This matters because it enables more efficient and accurate real-time speech processing, crucial for applications like voice assistants and live transcription services.

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  • Backend Sampling Merged into llama.cpp


    backend sampling has been merged into llama.cppBackend sampling has been incorporated into llama.cpp, allowing sampling to be directly integrated into the computation graph on backends such as CUDA. This integration can potentially minimize the need for data transfers between the GPU and CPU, enhancing efficiency and performance. By reducing these data transfers, computational processes can become more streamlined, leading to faster and more efficient machine learning operations. This matters because it can significantly optimize resource usage and improve the speed of machine learning tasks.

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  • VibeVoice TTS on DGX Spark: Fast & Responsive Setup


    766ms voice assistant on DGX Spark - VibeVoice + Whisper + Ollama streaming pipelineMicrosoft's VibeVoice-Realtime TTS has been successfully implemented on DGX Spark with full GPU acceleration, achieving a significant reduction in time to first audio from 2-3 seconds to just 766ms. This setup utilizes a streaming pipeline that integrates Whisper STT, Ollama LLM, and VibeVoice TTS, allowing for sentence-level streaming and continuous audio playback for enhanced responsiveness. A common issue with CUDA availability on DGX Spark can be resolved by ensuring PyTorch is installed with GPU support, using specific installation commands. The VibeVoice model offers different configurations, with the 0.5B model providing quicker response times and the 1.5B model offering advanced voice cloning capabilities. This matters because it highlights advancements in real-time voice assistant technology, improving user interaction through faster and more responsive audio processing.

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  • Training a Custom YOLO Model for Posture Detection


    Trained my first custom YOLO model - posture detection. Here's what I learned (including what didn't work)Embarking on a machine learning journey, a newcomer trained a YOLO classification model to detect poor sitting posture, discovering valuable insights and challenges. While pose estimation initially seemed promising, it failed to deliver results, and the YOLO model struggled with partial side views, highlighting the limitations of pre-trained models. The experience underscored that a lower training loss doesn't guarantee a better model, as evidenced by overfitting when validation accuracy remained unchanged. Utilizing the early stopping parameter proved crucial in optimizing training time, and converting the model from .pt to TensorRT significantly improved inference speed, doubling the frame rate from 15 to 30 FPS. Understanding these nuances is essential for efficient and effective model training in machine learning projects.

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  • 160x Speedup in Nudity Detection with ONNX & PyTorch


    An innovative approach to enhancing the efficiency of a nudity detection pipeline achieved a remarkable 160x speedup by utilizing a "headless" strategy with ONNX and PyTorch. The optimization involved converting the model to an ONNX format, which is more efficient for inference, and removing unnecessary components that do not contribute to the final prediction. This streamlined process not only improves performance but also reduces computational costs, making it more feasible for real-time applications. Such advancements are crucial for deploying AI models in environments where speed and resource efficiency are paramount.

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  • OpenCV 4.13: Enhanced AVX-512 and CUDA 13 Support


    OpenCV 4.13 brings more AVX-512 usage, CUDA 13 support, many other new featuresOpenCV 4.13 introduces enhanced support for AVX-512, a set of instructions that can significantly boost performance on compatible hardware, making it more efficient for tasks such as image processing. The update also includes support for CUDA 13, enabling better integration with NVIDIA's latest GPU technologies, which is crucial for accelerating computer vision applications. Additionally, the release brings a variety of other improvements and new features, including bug fixes and optimizations, to further enhance the library's capabilities. These advancements are important as they enable developers to leverage cutting-edge hardware and software optimizations for more efficient and powerful computer vision solutions.

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  • Edge AI with NVIDIA Jetson for Robotics


    Getting Started with Edge AI on NVIDIA Jetson: LLMs, VLMs, and Foundation Models for RoboticsEdge AI is becoming increasingly important for devices like robots and smart cameras that require real-time processing without relying on cloud services. NVIDIA's Jetson platform offers compact, GPU-accelerated modules designed for edge AI, allowing developers to run advanced AI models locally. This setup ensures data privacy and reduces network latency, making it ideal for applications ranging from personal AI assistants to autonomous robots. The Jetson series, including the Orin Nano, AGX Orin, and AGX Thor, supports varying model sizes and complexities, enabling developers to choose the right fit for their needs. This matters because it empowers developers to create intelligent, responsive devices that operate independently and efficiently in real-world environments.

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